ASoC: Add dependency on INTEL_SCU_IPC for Intel MID drivers

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Harsha Priya <priya.harsha@intel.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/mid-x86/Kconfig

 config SND_MFLD_MACHINE
 	tristate "SOC Machine Audio driver for Intel Medfield MID platform"
+	depends on INTEL_SCU_IPC
 	select SND_SOC_SN95031
 	select SND_SST_PLATFORM
 	help