Pull VGA-switcheroo audio client support for HD-audio from Takashi Iwai.

This depended on the recent drm pull.

* tag 'hda-switcheroo' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - unlock on error in azx_interrupt()
  ALSA: hda - Support VGA-switcheroo
  ALSA: hda - Export snd_hda_lock_devices()
  ALSA: hda - Check the dead HDMI audio controller by vga-switcheroo