add context_hub into audio hal group

While implementing the capo nanoapp for audio configuration, we met
some chre socket connected error due to the access group denied.

Add context_hub group for audio hal to connect chre socket.

go/capo-algo

Bug: 141128522
Bug: 149069556
Test: FULL build with audio hal part and local prebuilts nanoapp.
Test: Audio HAL communicates normally with CHRE socket.
Change-Id: Iea84411682f4c3e08f8b37a5b21818b0e9b04983
diff --git a/audio/common/all-versions/default/service/android.hardware.audio.service.rc b/audio/common/all-versions/default/service/android.hardware.audio.service.rc
index 63d2542..e7956b2 100644
--- a/audio/common/all-versions/default/service/android.hardware.audio.service.rc
+++ b/audio/common/all-versions/default/service/android.hardware.audio.service.rc
@@ -2,7 +2,7 @@
     class hal
     user audioserver
     # media gid needed for /dev/fm (radio) and for /data/misc/media (tee)
-    group audio camera drmrpc inet media mediadrm net_bt net_bt_admin net_bw_acct wakelock
+    group audio camera drmrpc inet media mediadrm net_bt net_bt_admin net_bw_acct wakelock context_hub
     capabilities BLOCK_SUSPEND
     ioprio rt 4
     writepid /dev/cpuset/foreground/tasks /dev/stune/foreground/tasks