ASoC: Intel: Bxtn: Add Broxton PCI ID

Broxton is an Intel SoC which sports a DSP and system is quite
like Skylake. So add this ID in Skylake driver

Signed-off-by: Senthilnathan Veppur <senthilnathanx.veppur@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>