meta-bletchley: update fanX_good and sledX_good LED behaviour

Start fanX_good LED group during sysyem early init.
Add sledX_good LED group start/stop service into obmc-host-startmin@X
and obmc-host-shutdown@X targets.

Signed-off-by: Potin Lai <potin.lai@quantatw.com>
Change-Id: Ibfab75d6f08550806d320b8a95e67d5fd5bedf82
diff --git a/meta-facebook/meta-bletchley/recipes-bletchley/plat-svc/plat-svc_0.1.bb b/meta-facebook/meta-bletchley/recipes-bletchley/plat-svc/plat-svc_0.1.bb
index dcbf6e8..99af81d 100644
--- a/meta-facebook/meta-bletchley/recipes-bletchley/plat-svc/plat-svc_0.1.bb
+++ b/meta-facebook/meta-bletchley/recipes-bletchley/plat-svc/plat-svc_0.1.bb
@@ -1,7 +1,7 @@
 LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
 
-inherit allarch systemd
+inherit allarch systemd obmc-phosphor-systemd
 
 RDEPENDS:${PN} += "bash"
 RDEPENDS:${PN} += "libgpiod-tools"
@@ -23,3 +23,5 @@
     install -d ${D}${systemd_system_unitdir}
     install -m 0644 ${WORKDIR}/bletchley-sys-init.service ${D}${systemd_system_unitdir}
 }
+
+SYSTEMD_OVERRIDE:${PN}:bletchley += "bletchley-sys-init.conf:bletchley-sys-init.service.d/bletchley-sys-init.conf"