ASoC: Intel: mrfld: fix semicolon.cocci warnings

sound/soc/intel/sst-atom-controls.c:249:2-3: Unneeded semicolon
sound/soc/intel/sst-atom-controls.c:289:2-3: Unneeded semicolon

 Removes unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>