ASoC: Intel: Boards: tgl_max98373: add dpcm_capture flag for speaker_smart_amp

ASoC: Intel: Boards: tgl_max98373: add dpcm_capture flag for speaker_smart_amp

Smart_amp_speaker device has the playback stream and capture stream
associated to it. Hence add the dpcm_capture = 1 flag while dailink
creation.
This patches fixes:
ERR kernel [timestamp] SSP1-Codec: ASoC: no backend capture stream

Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Dharageswari R <dharageswari.r@intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20201109210958.84198-1-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>