ASoC: intel: turn off COMPILE_TEST for medfield

Since medfield machine uses SCU_IPC which is not availble for all archs, so
compile test fails on these
Reported-by: Nkbuild test robot <fengguang.wu@intel.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/intel/Kconfig

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