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/initfs/obmc-phosphor-initfs.bbappend b/meta-openpower/recipes-phosphor/initfs/obmc-phosphor-initfs.bbappend
index bb8a87c..253903d 100644
--- a/meta-openpower/recipes-phosphor/initfs/obmc-phosphor-initfs.bbappend
+++ b/meta-openpower/recipes-phosphor/initfs/obmc-phosphor-initfs.bbappend
@@ -1 +1 @@
-RDEPENDS_${PN}_append_df-openpower = " cf-fsi-firmware"
+RDEPENDS:${PN}:append:df-openpower = " cf-fsi-firmware"