universal7870: selinux: fix audio

Signed-off-by: steadfasterX <steadfasterX@gmail.com>

sepolicy/file_contexts

@@ -56,6 +56,9 @@
 # Knox status
 /dev/knox_kap                u:object_r:knox_device:s0
 
+# audio hal
+/dev/i2c-20			u:object_r:audio_device:s0
+
 ####################################
 # efs files
 /efs/FactoryApp(/.*)?        u:object_r:app_efs_file:s0

sepolicy/hal_audio_default.te

+allow hal_audio_default property_socket:sock_file write;
+allow hal_audio_default init:unix_stream_socket connectto;
+allow hal_audio_default audio_device:chr_file { open read write };
+allow hal_audio_default audio_prop:property_service set;
+#allow hal_audio_default efs_file:dir search;