ASoC: Intel: kbl: update dmic fixup params

Update dmic fixup params to always expose QUAD channel capture
device, enabling User-space to control channel count.
Assign min and max channel only based on input hw_params.

Signed-off-by: Naveen Manohar <naveen.m@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>