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/logging/ffdc_git.bb b/meta-phosphor/recipes-phosphor/logging/ffdc_git.bb
index f6ee824..3b05b9e 100644
--- a/meta-phosphor/recipes-phosphor/logging/ffdc_git.bb
+++ b/meta-phosphor/recipes-phosphor/logging/ffdc_git.bb
@@ -7,7 +7,7 @@
 
 DEPENDS += "systemd"
 
-RDEPENDS_${PN} += " \
+RDEPENDS:${PN} += " \
         ${VIRTUAL-RUNTIME_base-utils} \
         "