audio_hw: Check if usb device is removed before opening stream
am: d9653bdbca

Change-Id: I78ffaef1dcef5530c701181f64219bffd4f01956
tree: 7cca891fdfaadd1423250e65a0b39489330ae700
  1. hal/
  2. legacy/
  3. post_proc/
  4. visualizer/
  5. voice_processing/
  6. Android.mk