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/host/aspeed-lpc-ctrl_git.bb b/meta-openpower/recipes-phosphor/host/aspeed-lpc-ctrl_git.bb
index 2527734..9f18287 100644
--- a/meta-openpower/recipes-phosphor/host/aspeed-lpc-ctrl_git.bb
+++ b/meta-openpower/recipes-phosphor/host/aspeed-lpc-ctrl_git.bb
@@ -11,7 +11,7 @@
 
 S = "${WORKDIR}/git"
 
-SYSTEMD_SERVICE_${PN} += "pnorboot.service"
+SYSTEMD_SERVICE:${PN} += "pnorboot.service"
 
 SRC_URI += "git://github.com/shenki/aspeed-lpc-control"
 SRCREV = "af42b7ff01e71c0dd4c60214dd46ed487611f36d"