meta-phosphor: change systemd.bbclass to match upstream override syntax

Upstream bbclasses changed to typically use the `:${PN}` override
syntax, including the SYSTEMD_ variables.  Change our systemd.bbclass
to do the same for consistency and perform a tree-wide variable
replacement.

Spot checked by building bletchley and witherspoon and checking
some of the SYSTEMD_LINK directives on installed packages under qemu.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I20a9dd809bff8af8759488734f80486c7228c6eb
diff --git a/meta-openpower/recipes-phosphor/flash/phosphor-software-manager_%.bbappend b/meta-openpower/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
index 5255be4..9df8193 100644
--- a/meta-openpower/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
+++ b/meta-openpower/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
@@ -1,4 +1,4 @@
 FILESEXTRAPATHS:prepend:df-openpower := "${THISDIR}/${PN}:"
 
-SYSTEMD_OVERRIDE_${PN}-updater:append:df-openpower = \
+SYSTEMD_OVERRIDE:${PN}-updater:append:df-openpower = \
     " software-bmc-updater.conf:xyz.openbmc_project.Software.BMC.Updater.service.d/software-bmc-updater.conf"
diff --git a/meta-openpower/recipes-phosphor/fsi/op-fsi.bb b/meta-openpower/recipes-phosphor/fsi/op-fsi.bb
index a76acb4..05d07dd 100644
--- a/meta-openpower/recipes-phosphor/fsi/op-fsi.bb
+++ b/meta-openpower/recipes-phosphor/fsi/op-fsi.bb
@@ -18,5 +18,5 @@
 
 SYSTEMD_SERVICE:${PN} += "${TMPL_SCAN} fsi-enable.service fsi-disable.service"
 
-SYSTEMD_LINK_${PN} += "${@compose_list(d, 'FMT_SCAN_CHASSIS', 'OBMC_CHASSIS_INSTANCES')}"
-SYSTEMD_LINK_${PN} += "${@compose_list(d, 'FMT_SCAN_HOST', 'OBMC_HOST_INSTANCES')}"
+SYSTEMD_LINK:${PN} += "${@compose_list(d, 'FMT_SCAN_CHASSIS', 'OBMC_CHASSIS_INSTANCES')}"
+SYSTEMD_LINK:${PN} += "${@compose_list(d, 'FMT_SCAN_HOST', 'OBMC_HOST_INSTANCES')}"
diff --git a/meta-openpower/recipes-phosphor/host/checkstop-monitor.bb b/meta-openpower/recipes-phosphor/host/checkstop-monitor.bb
index 83f3a3e..9b1b1c4 100644
--- a/meta-openpower/recipes-phosphor/host/checkstop-monitor.bb
+++ b/meta-openpower/recipes-phosphor/host/checkstop-monitor.bb
@@ -14,7 +14,7 @@
 
 # Copies config file having arguments for monitoring host checkstop
 # via GPIO assertion
-SYSTEMD_ENVIRONMENT_FILE_${PN} +="obmc/gpio/checkstop"
+SYSTEMD_ENVIRONMENT_FILE:${PN} +="obmc/gpio/checkstop"
 
 # This package is not supplying the unit file and also this is not a native
 # recipe since state-mgmt needs this package at runtime. Unsetting this below
@@ -22,10 +22,10 @@
 SYSTEMD_SERVICE:${PN} ?=""
 
 # Install the override to set up a Conflicts relation
-SYSTEMD_OVERRIDE_${PN} +="checkstop.conf:phosphor-gpio-monitor@checkstop.service.d/checkstop.conf"
+SYSTEMD_OVERRIDE:${PN} +="checkstop.conf:phosphor-gpio-monitor@checkstop.service.d/checkstop.conf"
 
 STATES = "startmin"
 GPIO_MONITOR_TMPL = "phosphor-gpio-monitor@.service"
 GPIO_MONITOR_TGTFMT = "phosphor-gpio-monitor@{1}.service"
 CHECKSTOP_MONITOR_FMT = "../${GPIO_MONITOR_TMPL}:obmc-host-{0}@{2}.target.wants/${GPIO_MONITOR_TGTFMT}"
-SYSTEMD_LINK_${PN} += "${@compose_list(d, 'CHECKSTOP_MONITOR_FMT', 'STATES', 'OBMC_HOST_MONITOR_INSTANCES', 'OBMC_HOST_INSTANCES')}"
+SYSTEMD_LINK:${PN} += "${@compose_list(d, 'CHECKSTOP_MONITOR_FMT', 'STATES', 'OBMC_HOST_MONITOR_INSTANCES', 'OBMC_HOST_INSTANCES')}"
diff --git a/meta-openpower/recipes-phosphor/host/p9-cfam-override.bb b/meta-openpower/recipes-phosphor/host/p9-cfam-override.bb
index 0a189e8..d779785 100644
--- a/meta-openpower/recipes-phosphor/host/p9-cfam-override.bb
+++ b/meta-openpower/recipes-phosphor/host/p9-cfam-override.bb
@@ -17,4 +17,4 @@
 FMT = "../${TMPL}:${TGTFMT}.requires/${INSTFMT}"
 
 SYSTEMD_SERVICE:${PN} += "${TMPL}"
-SYSTEMD_LINK_${PN} += "${@compose_list(d, 'FMT', 'OBMC_CHASSIS_INSTANCES')}"
+SYSTEMD_LINK:${PN} += "${@compose_list(d, 'FMT', 'OBMC_CHASSIS_INSTANCES')}"
diff --git a/meta-openpower/recipes-phosphor/host/p9-host-start.bb b/meta-openpower/recipes-phosphor/host/p9-host-start.bb
index f735c0f..549bbe2 100644
--- a/meta-openpower/recipes-phosphor/host/p9-host-start.bb
+++ b/meta-openpower/recipes-phosphor/host/p9-host-start.bb
@@ -22,4 +22,4 @@
 FMT = "../${TMPL}:${TGTFMT}.requires/${INSTFMT}"
 
 SYSTEMD_SERVICE:${PN} += "${TMPL}"
-SYSTEMD_LINK_${PN} += "${@compose_list(d, 'FMT', 'OBMC_CHASSIS_INSTANCES')}"
+SYSTEMD_LINK:${PN} += "${@compose_list(d, 'FMT', 'OBMC_CHASSIS_INSTANCES')}"
diff --git a/meta-openpower/recipes-phosphor/occ/openpower-occ-control_git.bb b/meta-openpower/recipes-phosphor/occ/openpower-occ-control_git.bb
index 3903ef6..4408291 100644
--- a/meta-openpower/recipes-phosphor/occ/openpower-occ-control_git.bb
+++ b/meta-openpower/recipes-phosphor/occ/openpower-occ-control_git.bb
@@ -55,8 +55,8 @@
 HOST_TGTFMT = "obmc-host-{1}@{2}.target"
 OCC_INSTFMT = "op-occ-{0}@{2}.service"
 HOST_OCC_FMT = "../${OCC_TMPL}:${HOST_TGTFMT}.wants/${OCC_INSTFMT}"
-SYSTEMD_LINK_${PN} += "${@compose_list_zip(d, 'HOST_OCC_FMT', 'OCC_ENABLE', 'HOST_START', 'OBMC_HOST_INSTANCES')}"
-SYSTEMD_LINK_${PN} += "${@compose_list_zip(d, 'HOST_OCC_FMT', 'OCC_DISABLE', 'HOST_STOP', 'OBMC_HOST_INSTANCES')}"
+SYSTEMD_LINK:${PN} += "${@compose_list_zip(d, 'HOST_OCC_FMT', 'OCC_ENABLE', 'HOST_START', 'OBMC_HOST_INSTANCES')}"
+SYSTEMD_LINK:${PN} += "${@compose_list_zip(d, 'HOST_OCC_FMT', 'OCC_DISABLE', 'HOST_STOP', 'OBMC_HOST_INSTANCES')}"
 
 # Set the occ disable service to be executed on host error
 HOST_ERROR_TARGETS = "crash timeout"
@@ -66,7 +66,7 @@
 OCC_DISABLE_INSTFMT = "op-occ-disable@{1}.service"
 HOST_ERROR_FMT = "../${OCC_DISABLE_TMPL}:${HOST_ERROR_TGTFMT}.wants/${OCC_DISABLE_INSTFMT}"
 
-SYSTEMD_LINK_${PN} += "${@compose_list(d, 'HOST_ERROR_FMT', 'HOST_ERROR_TARGETS', 'OBMC_HOST_INSTANCES')}"
+SYSTEMD_LINK:${PN} += "${@compose_list(d, 'HOST_ERROR_FMT', 'HOST_ERROR_TARGETS', 'OBMC_HOST_INSTANCES')}"
 
 S = "${WORKDIR}/git"