mmc: Drop COMPILE_TEST Kconfig option for MMC_S3C

MMC_S3C isn't ready yet to be built with COMPILE_TEST, hence drop it.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20200908140242.743234-1-ulf.hansson@linaro.orgReviewed-by: Krzysztof Kozlowski <krzk@kernel.org>

drivers/mmc/host/Kconfig

@@ -630,7 +630,7 @@ config MMC_SPI
 
 config MMC_S3C
 	tristate "Samsung S3C SD/MMC Card Interface support"
-	depends on ARCH_S3C24XX || COMPILE_TEST
+	depends on ARCH_S3C24XX
 	depends on S3C24XX_DMAC
 	help
 	  This selects a driver for the MCI interface found in