am bf1c8748: alsa_sound: Add support for multichannel hdmi

* commit 'bf1c87481d62736cab8832e9085c121fbafdbb6b':
  alsa_sound: Add support for multichannel hdmi
tree: 39dba978745f04e7d7f2dd6a59de7a1d38940ec0
  1. alsa_sound/
  2. libalsa-intf/
  3. Android.mk