mmc: renesas_sdhi: consolidate DMAC CONFIG options

The description in the Makefile is odd.  Fix the CONFIG selection
in a cleaner way.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/Kconfig

@@ -599,8 +599,6 @@ config MMC_SDHI
 	depends on SUPERH || ARM || ARM64
 	depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
 	select MMC_TMIO_CORE
-	select MMC_SDHI_SYS_DMAC if (SUPERH || ARM)
-	select MMC_SDHI_INTERNAL_DMAC if ARM64
 	help
 	  This provides support for the SDHI SD/SDIO controller found in
 	  Renesas SuperH, ARM and ARM64 based SoCs
@@ -608,6 +606,7 @@ config MMC_SDHI
 config MMC_SDHI_SYS_DMAC
 	tristate "DMA for SDHI SD/SDIO controllers using SYS-DMAC"
 	depends on MMC_SDHI
+	default MMC_SDHI if (SUPERH || ARM)
 	help
 	  This provides DMA support for SDHI SD/SDIO controllers
 	  using SYS-DMAC via DMA Engine. This supports the controllers
@@ -617,6 +616,7 @@ config MMC_SDHI_INTERNAL_DMAC
 	tristate "DMA for SDHI SD/SDIO controllers using on-chip bus mastering"
 	depends on ARM64 || COMPILE_TEST
 	depends on MMC_SDHI
+	default MMC_SDHI if ARM64
 	help
 	  This provides DMA support for SDHI SD/SDIO controllers
 	  using on-chip bus mastering. This supports the controllers

drivers/mmc/host/Makefile

@@ -39,12 +39,8 @@ obj-$(CONFIG_MMC_SDRICOH_CS)	+= sdricoh_cs.o
 obj-$(CONFIG_MMC_TMIO)		+= tmio_mmc.o
 obj-$(CONFIG_MMC_TMIO_CORE)	+= tmio_mmc_core.o
 obj-$(CONFIG_MMC_SDHI)		+= renesas_sdhi_core.o
-ifeq ($(subst m,y,$(CONFIG_MMC_SDHI_SYS_DMAC)),y)
-obj-$(CONFIG_MMC_SDHI)		+= renesas_sdhi_sys_dmac.o
-endif
-ifeq ($(subst m,y,$(CONFIG_MMC_SDHI_INTERNAL_DMAC)),y)
-obj-$(CONFIG_MMC_SDHI)		+= renesas_sdhi_internal_dmac.o
-endif
+obj-$(CONFIG_MMC_SDHI_SYS_DMAC)		+= renesas_sdhi_sys_dmac.o
+obj-$(CONFIG_MMC_SDHI_INTERNAL_DMAC)	+= renesas_sdhi_internal_dmac.o
 obj-$(CONFIG_MMC_CB710)		+= cb710-mmc.o
 obj-$(CONFIG_MMC_VIA_SDMMC)	+= via-sdmmc.o
 obj-$(CONFIG_SDH_BFIN)		+= bfin_sdh.o