meta-aspeed: prep for new override syntax

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I8135871ae0e3b360aff7d878f7cf04a2504f2dd0
diff --git a/meta-aspeed/recipes-core/udev/udev-aspeed-vuart.bb b/meta-aspeed/recipes-core/udev/udev-aspeed-vuart.bb
index c0ee677..188b0a4 100644
--- a/meta-aspeed/recipes-core/udev/udev-aspeed-vuart.bb
+++ b/meta-aspeed/recipes-core/udev/udev-aspeed-vuart.bb
@@ -7,7 +7,7 @@
 S = "${WORKDIR}"
 SRC_URI += "file://61-aspeed-vuart.rules"
 
-RDEPENDS_${PN} += "udev"
+RDEPENDS:${PN} += "udev"
 
 do_install() {
     install -d ${D}/lib/udev/rules.d