Override vendor's usb_audio_policy_configuration
Android 8.1 added the support for new type of USB Audio devices
(USB_HEADSET, instead of old USB_DEVICE)
Some older USB devices got converted to this USB_HEADSET while still
using the old protocol.
There is no driver change needed, but the audio policy needs to be
changed.
Since vendors are simply using AOSP usb_audio_policy_configuration
Override it by ourself.
diff --git a/sepolicy/file_contexts b/sepolicy/file_contexts
index 10bc0ce..f80dc3a 100644
--- a/sepolicy/file_contexts
+++ b/sepolicy/file_contexts
@@ -1,2 +1,3 @@
/system/bin/phh-su u:object_r:phhsu_exec:s0
/system/bin/vndk-detect u:object_r:vndk_detect_exec:s0
+/system/etc/usb_audio_policy_configuration.xml u:object_r:vendor_configs_file:s0