post_proc: disable Bassboost and Virtualizer for USB_ACCESSORY

USB_ACCESSORY is not intended to be applied with SA+ bassboost
and virtualizer, so add into invalid devices list.

CRs-Fixed: 659191
Change-Id: If1f3421f9935ce624dc21895d9244d36d195b2bd
diff --git a/post_proc/bass_boost.c b/post_proc/bass_boost.c
index 341f145..c620453 100644
--- a/post_proc/bass_boost.c
+++ b/post_proc/bass_boost.c
@@ -158,6 +158,7 @@
        (device == AUDIO_DEVICE_OUT_PROXY) ||
 #endif
        (device == AUDIO_DEVICE_OUT_AUX_DIGITAL) ||
+       (device == AUDIO_DEVICE_OUT_USB_ACCESSORY) ||
        (device == AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET)) {
         if (offload_bassboost_get_enable_flag(&(bass_ctxt->offload_bass))) {
             offload_bassboost_set_enable_flag(&(bass_ctxt->offload_bass), false);