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/packagegroups/packagegroup-obmc-phosphor-debugtools.bbappend b/meta-openpower/recipes-phosphor/packagegroups/packagegroup-obmc-phosphor-debugtools.bbappend
index 5ba7c47..313261f 100644
--- a/meta-openpower/recipes-phosphor/packagegroups/packagegroup-obmc-phosphor-debugtools.bbappend
+++ b/meta-openpower/recipes-phosphor/packagegroups/packagegroup-obmc-phosphor-debugtools.bbappend
@@ -1,4 +1,4 @@
-RDEPENDS_${PN}_append_df-openpower = " \
+RDEPENDS:${PN}:append:df-openpower = " \
     pflash \
     gard \
     fsidbg \