Add Android permissions for audioserver

audioserver has the same permissions as mediaserver.

TBD: Pare down permissions.

Bug: 24511453
Change-Id: Id7abddd79a730ad95b554a94207df3aa4b676f2a
diff --git a/data/etc/platform.xml b/data/etc/platform.xml
index 51019cc..b4f88c33 100644
--- a/data/etc/platform.xml
+++ b/data/etc/platform.xml
@@ -106,6 +106,7 @@
     </permission>
 
     <permission name="android.permission.ACCESS_FM_RADIO" >
+        <!-- /dev/fm is gid media, not audio -->
         <group gid="media" />
     </permission>
 
@@ -128,6 +129,12 @@
     <assign-permission name="android.permission.UPDATE_APP_OPS_STATS" uid="media" />
     <assign-permission name="android.permission.GET_PROCESS_STATE_AND_OOM_SCORE" uid="media" />
 
+    <assign-permission name="android.permission.MODIFY_AUDIO_SETTINGS" uid="audioserver" />
+    <assign-permission name="android.permission.ACCESS_SURFACE_FLINGER" uid="audioserver" />
+    <assign-permission name="android.permission.WAKE_LOCK" uid="audioserver" />
+    <assign-permission name="android.permission.UPDATE_DEVICE_STATS" uid="audioserver" />
+    <assign-permission name="android.permission.UPDATE_APP_OPS_STATS" uid="audioserver" />
+
     <assign-permission name="android.permission.ACCESS_SURFACE_FLINGER" uid="graphics" />
 
     <!-- This is a list of all the libraries available for application