Add drmrpc group to mediaserver and drmserver so they can make the drm rpc calls

Bug 4598045 Implementing secure video path on TI OMAP4 chip for ICS

Change-Id: Iacfe3e79f067172085b96bb4cd4484101aa5be1e
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 7b151f2..77ccafc 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -416,12 +416,12 @@
 service drm /system/bin/drmserver
     class main
     user drm
-    group system inet
+    group system inet drmrpc
 
 service media /system/bin/mediaserver
     class main
     user media
-    group audio camera inet net_bt net_bt_admin net_bw_acct
+    group audio camera inet net_bt net_bt_admin net_bw_acct drmrpc
     ioprio rt 4
 
 service bootanim /system/bin/bootanimation