hal: msm8974: Fix the wrong device for AUDIO_SOURCE_CAMCORDER

* The 4b084132 commit ("audio: select camcorder snd device according to camera
  orientation") adds the ability to configure microphones depending on the
  camera orientation, however, some code associated with 'snd_device' is written
  in the wrong place, since the subsequent code after them will still reassign
  'snd_device'. Fix this by moving the current code to the place
  SND_DEVICE_IN_CAMCORDER_MIC, as was originally intended in the original
  source.

Change-Id: Ief851c0f320d0acaa95fb5c33713d2e655194497