gta4xl-common: Allow audio HAL to connect to rild

* For incall volume setting

Change-Id: Iddb54db9d606eb5765db9189cc9c7519df3cf68e
diff --git a/sepolicy/vendor/hal_audio_default.te b/sepolicy/vendor/hal_audio_default.te
index dd24a4c..1576180 100644
--- a/sepolicy/vendor/hal_audio_default.te
+++ b/sepolicy/vendor/hal_audio_default.te
@@ -7,3 +7,5 @@
 get_prop(hal_audio_default, vendor_radio_prop);
 
 allow hal_audio_default sysfs_audio:file r_file_perms;
+
+allow hal_audio_default rild:unix_stream_socket connectto;