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/fans/obmc-control-fan_git.bb b/meta-phosphor/recipes-phosphor/fans/obmc-control-fan_git.bb
index e7d86e4..a138f7a 100644
--- a/meta-phosphor/recipes-phosphor/fans/obmc-control-fan_git.bb
+++ b/meta-phosphor/recipes-phosphor/fans/obmc-control-fan_git.bb
@@ -11,5 +11,5 @@
 
 SKELETON_DIR = "fanctl"
 
-DBUS_SERVICE_${PN} += "org.openbmc.control.Fans.service"
-SYSTEMD_SERVICE_${PN} += "obmc-max-fans.service"
+DBUS_SERVICE:${PN} += "org.openbmc.control.Fans.service"
+SYSTEMD_SERVICE:${PN} += "obmc-max-fans.service"