s4: gpowerd: Disable gpowerd.service by default in gBMC image

Disable automatic systemd startup for gpowerd.service in the base gBMC
image so that gpowerd is only started when enabled by the gpowerd-enable
MSV package.

Tested: https://fusion2.corp.google.com/8728afeb-f86a-37b0-ae43-4edd0100236b
Google-Bug-Id: 565489970
Change-Id: I28ab99382031b770948406470cfdbf55ad90cb6c
Signed-off-by: Shounak Mitra <shounak@google.com>

recipes-google/s4/gpowerd_git.bb

diff --git a/recipes-google/s4/gpowerd_git.bb b/recipes-google/s4/gpowerd_git.bb
index a2f15dd..9a33212 100644
--- a/recipes-google/s4/gpowerd_git.bb
+++ b/recipes-google/s4/gpowerd_git.bb
@@ -42,6 +42,7 @@
 
 SYSTEMD_PACKAGES = "${PN}"
 SYSTEMD_SERVICE:${PN} += "gpowerd.service"
+SYSTEMD_AUTO_ENABLE = "disable"
 
 do_install:append() {
   install -d ${D}/var/google/