ASoC: Intel: boards: remove unnecessary inclusion of skl.h

We've used a standard interface for machine drivers for some time now,
there is no need for this dependency on a Skylake-specific header

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
4 files changed