Extend permissions of cameraserver

Camera service will need to a way to query
the process state and oom score.

BUG: 34701266
Test: Manual testing + cts-tradefd run cts -m Camera --abi armeabi-v7a --disable-reboot
Change-Id: I4df704817d2fc728d421daeffbbbcee2e61d8c3b
diff --git a/data/etc/platform.xml b/data/etc/platform.xml
index e46f166..9cdc660 100644
--- a/data/etc/platform.xml
+++ b/data/etc/platform.xml
@@ -155,6 +155,7 @@
     <assign-permission name="android.permission.WAKE_LOCK" uid="cameraserver" />
     <assign-permission name="android.permission.UPDATE_DEVICE_STATS" uid="cameraserver" />
     <assign-permission name="android.permission.UPDATE_APP_OPS_STATS" uid="cameraserver" />
+    <assign-permission name="android.permission.GET_PROCESS_STATE_AND_OOM_SCORE" uid="cameraserver" />
 
     <assign-permission name="android.permission.ACCESS_SURFACE_FLINGER" uid="graphics" />