fix following sparse warnings: (new ones prefixed by >>)

>> sound/soc/intel/boards/cht_bsw_max98090_ti.c:168:37: sparse:
>> incorrect type in argument 2 (different base types)
   sound/soc/intel/boards/cht_bsw_max98090_ti.c:168:37:    expected
unsigned int [unsigned] val
   sound/soc/intel/boards/cht_bsw_max98090_ti.c:168:37:    got
restricted snd_pcm_format_t [usertype] <noident>
Signed-off-by: Fang, Yang A <yang.a.fang@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>