meta-phosphor: prep for new override syntax

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I588025b614416c43aa2d053765ab53bacf890cb5
diff --git a/meta-phosphor/recipes-core/packagegroups/nativesdk-packagegroup-sdk-host.bbappend b/meta-phosphor/recipes-core/packagegroups/nativesdk-packagegroup-sdk-host.bbappend
index b8648ca..694aa2f 100644
--- a/meta-phosphor/recipes-core/packagegroups/nativesdk-packagegroup-sdk-host.bbappend
+++ b/meta-phosphor/recipes-core/packagegroups/nativesdk-packagegroup-sdk-host.bbappend
@@ -1,4 +1,4 @@
-RDEPENDS_${PN}_append = " \
+RDEPENDS:${PN}:append = " \
         nativesdk-autoconf-archive \
         nativesdk-meson \
         nativesdk-python3-sdbus++ \