When external RT714/715 devices are used for capture, we don't want
the PCH DMICs to be used.

Any information provided by the SOF platform driver or DMI quirks will
be overridden.
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NKai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: NLibin Yang <libin.yang@intel.com>
Link: https://lore.kernel.org/r/20210505163705.305616-5-pierre-louis.bossart@linux.intel.comSigned-off-by: NMark Brown <broonie@kernel.org>