am 2c798912: alsa_sound: avoid pcm_open error

* commit '2c79891211108cd8157124c1b6f9d393729602ff':
  alsa_sound: avoid pcm_open error
tree: 4d1cf7a2c366d85a06ec8c2ebc2704e7641129f8
  1. alsa_sound/
  2. libalsa-intf/
  3. Android.mk