ASoC: msm8974: Adding support for AUXPCM

Add the correct GPIOs so that auxpcm interface works on the
hardware. Also add the support for 16KHz through an amix
command.  Update the 8974 device tree to add the 16 KHz
parameters.

Change-Id: I142138084f0d0b2c80f46599064a207ba37e54e2
Signed-off-by: Damir Didjusto <damird@codeaurora.org>
7 files changed