meta-phosphor: prep for new override syntax

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I588025b614416c43aa2d053765ab53bacf890cb5
diff --git a/meta-phosphor/recipes-phosphor/chassis/obmc-op-control-power_git.bb b/meta-phosphor/recipes-phosphor/chassis/obmc-op-control-power_git.bb
index 8bae112..8c0394f 100644
--- a/meta-phosphor/recipes-phosphor/chassis/obmc-op-control-power_git.bb
+++ b/meta-phosphor/recipes-phosphor/chassis/obmc-op-control-power_git.bb
@@ -12,9 +12,9 @@
 SKELETON_DIR = "op-pwrctl"
 
 FMT = "org.openbmc.control.Power@{0}.service"
-DBUS_SERVICE_${PN} += "${@compose_list(d, 'FMT', 'OBMC_POWER_INSTANCES')}"
+DBUS_SERVICE:${PN} += "${@compose_list(d, 'FMT', 'OBMC_POWER_INSTANCES')}"
 
-SYSTEMD_SERVICE_${PN} += " \
+SYSTEMD_SERVICE:${PN} += " \
         op-power-start@.service \
         op-wait-power-on@.service \
         op-power-stop@.service \