Allow audioserver to access audio_device on non-Treble devices.

This should fix audio on non-Treble devices.

Bug: 75949883
Test: Built policy.
Change-Id: I90a4648aaf975d59be36afd5f62c88a015af10f7

private/audioserver.te

@@ -46,6 +46,9 @@ allow audioserver audio_data_file:file create_file_perms;
 # allow access to ALSA MMAP FDs for AAudio API
 allow audioserver audio_device:chr_file { read write };
 
+not_full_treble(`allow audioserver audio_device:dir r_dir_perms;')
+not_full_treble(`allow audioserver audio_device:chr_file rw_file_perms;')
+
 # For A2DP bridge which is loaded directly into audioserver
 unix_socket_connect(audioserver, bluetooth, bluetooth)