meta-{ibm, openpower}: minor override syntax fixes

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Iadecbc8418d901f82fcc741d3e88d2d202fe96fe
diff --git a/meta-openpower/recipes-phosphor/occ/openpower-occ-control_git.bb b/meta-openpower/recipes-phosphor/occ/openpower-occ-control_git.bb
index 02237b0..3903ef6 100644
--- a/meta-openpower/recipes-phosphor/occ/openpower-occ-control_git.bb
+++ b/meta-openpower/recipes-phosphor/occ/openpower-occ-control_git.bb
@@ -19,7 +19,7 @@
             ${D}${bindir}/occ-active.sh
 }
 
-DBUS_SERVICE_${PN} += "org.open_power.OCC.Control.service"
+DBUS_SERVICE:${PN} += "org.open_power.OCC.Control.service"
 SYSTEMD_SERVICE:${PN} += "op-occ-enable@.service"
 SYSTEMD_SERVICE:${PN} += "op-occ-disable@.service"