ASoC: Intel: boards: add card for MinnowBoardMax/Up I2S access

Add card with dummy codec and DAI to make I2S signals observable.
Uses Mic and Speaker pins/widgets to control DAPM

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>