ASoC: Intel: broadwell: change cpu_dai and platform components for SOF

The legacy driver uses dummy cpu_dai and platform, SOF requires actual
values to bind.

Signed-off-by: Pan Xiuli <xiuli.pan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200110235751.3404-4-pierre-louis.bossart@linux.intel.com


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