Backport 'Set /dev/sg1 permissions in ueventd.rc' to P22

... 'This way we don't need to guess when we need to chown.'

This is Tri's change to init.gs101.rc (http://go/a-g/15447093),
applied to init.<censored>.rc.

Under some circumstances (see bug), storageproxyd needs to access
/dev/sg1 but doesn't have permission, leading to other apps
blocking on storage.

Bug: 214910469
Test: Check that steps b/214910469#comment76 no longer gets stuck
Change-Id: I9e4133b6bb9ffab1e0044a16b3582436ccf5dd44

conf/init.gs201.rc

@@ -751,7 +751,6 @@ on post-fs-data
     symlink /mnt/vendor/persist/ss /data/vendor/ss/persist
     chown root system /data/vendor/ss/persist
     chmod 0770 /data/vendor/ss/persist
-    chown system system /dev/sg1
 
     restart storageproxyd
 

conf/ueventd.gs201.rc

@@ -162,6 +162,9 @@
 /dev/trusty-ipc-dev0     0660   system     drmrpc
 /dev/trusty-log0         0660   system     system
 
+# RPMB
+/dev/sg1                 0660   system     system
+
 # Citadel
 /dev/gsc0                0660   hsm        hsm