ASoC: SOF: Intel: simplify logic for DMI_L1 handling

We don't need to test in multiple places if the kconfig
SND_SOC_SOF_HDA_ALWAYS_ENABLE_DMI_L1 is enabled or not, we might as
well set the existing DMI_L1_COMPATIBLE flag.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20210812231940.172547-4-pierre-louis.bossart@linux.intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>