meta-ibm: witherspoon: fix file search paths

Typically it does not make any sense to append to FILESEXTRAPATHS.
FILESEXTRAPATHS is set in a bbappend when overriding something from
another layer.  The typical desire will be to make bitbake search for
files in the layer with the bbappend and not some other layer earlier in
the priority list.  Further, appending to FILESEXTRAPATHS will introduce
unexpected behavior when multiple layers append the same recipe - layers
with higher layer priorities that append to FILESEXTRAPATHS will find
their files overriden by files in layers with lower priorities.

Change-Id: Idd40e482006cf5bed9f52dd3ed9be83cd067abef
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-witherspoon/recipes-core/systemd/systemd_%.bbappend b/meta-witherspoon/recipes-core/systemd/systemd_%.bbappend
index 847714b..62ea76f 100644
--- a/meta-witherspoon/recipes-core/systemd/systemd_%.bbappend
+++ b/meta-witherspoon/recipes-core/systemd/systemd_%.bbappend
@@ -1,4 +1,4 @@
-FILESEXTRAPATHS_append := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
 SRC_URI += "file://journald-storage-policy.conf"
 SRC_URI += "file://systemd-journald-override.conf"
 SRC_URI += "file://journald-size-policy.conf"
diff --git a/meta-witherspoon/recipes-phosphor/fans/phosphor-fan_%.bbappend b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan_%.bbappend
index bc6ea80..a3fc74e 100644
--- a/meta-witherspoon/recipes-phosphor/fans/phosphor-fan_%.bbappend
+++ b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan_%.bbappend
@@ -1,4 +1,4 @@
-FILESEXTRAPATHS_append := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
 
 # Package configuration
 FAN_PACKAGES += " \
diff --git a/meta-witherspoon/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend b/meta-witherspoon/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend
index 0fa1105..f5a3582 100644
--- a/meta-witherspoon/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend
+++ b/meta-witherspoon/recipes-phosphor/gpio/phosphor-gpio-monitor_%.bbappend
@@ -1,4 +1,4 @@
-FILESEXTRAPATHS_append := "${THISDIR}/${PN}:"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
 
 TMPL_POWERSUPPLY = "phosphor-gpio-presence@.service"
 INSTFMT_POWERSUPPLY = "phosphor-gpio-presence@{0}.service"
diff --git a/meta-witherspoon/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend b/meta-witherspoon/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
index 02b1b53..eec3999 100644
--- a/meta-witherspoon/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
+++ b/meta-witherspoon/recipes-phosphor/ipmi/phosphor-ipmi-host_%.bbappend
@@ -1,4 +1,4 @@
-FILESEXTRAPATHS_append := ":${THISDIR}/${PN}"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
 SRC_URI_append = " \
 	file://occ_sensors.hardcoded.yaml \
 	file://hwmon_sensors.hardcoded.yaml \
diff --git a/meta-witherspoon/recipes-phosphor/settings/phosphor-settings-manager_%.bbappend b/meta-witherspoon/recipes-phosphor/settings/phosphor-settings-manager_%.bbappend
index 71a5836..02c0e94 100644
--- a/meta-witherspoon/recipes-phosphor/settings/phosphor-settings-manager_%.bbappend
+++ b/meta-witherspoon/recipes-phosphor/settings/phosphor-settings-manager_%.bbappend
@@ -1,2 +1,2 @@
-FILESEXTRAPATHS_append := ":${THISDIR}/${PN}"
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
 SRC_URI_append = " file://TPMEnable-default-true.override.yml"