ASoC: Intel: boards: remove select SND_HDA_DSP_LOADER

This option is only required with the Skylake platform driver, there
is no reason to have this option in machine drivers. This is
e.g. useless for SOF-based solutions.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191101173045.27099-9-pierre-louis.bossart@linux.intel.com


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