meta-openpower: prep for new override syntax

Change-Id: I5ca16c6fa7bc616bfa9bc41c4f86d32fd92b0287
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/meta-openpower/recipes-phosphor/configuration/openpower-yaml-config.bb b/meta-openpower/recipes-phosphor/configuration/openpower-yaml-config.bb
index 39141ba..6f8a607 100644
--- a/meta-openpower/recipes-phosphor/configuration/openpower-yaml-config.bb
+++ b/meta-openpower/recipes-phosphor/configuration/openpower-yaml-config.bb
@@ -25,11 +25,11 @@
         ${D}${datadir}/${BPN}/ipmi-occ-active-sensor-mrw.yaml
 }
 
-FILES_${PN}-dev = " \
+FILES:${PN}-dev = " \
     ${datadir}/${BPN}/ipmi-fru-properties-mrw.yaml \
     ${datadir}/${BPN}/ipmi-hostboot-fru-mrw.yaml \
     ${datadir}/${BPN}/ipmi-hostboot-volatile-sensor-mrw.yaml \
     ${datadir}/${BPN}/ipmi-occ-active-sensor-mrw.yaml \
     "
 
-ALLOW_EMPTY_${PN} = "1"
+ALLOW_EMPTY:${PN} = "1"