ARC: dwmmc: Adding DesignWare MMC driver support for ARC devboards

Add the DM_MMC-compatible DesignWare MMC driver support for Synopsys
ARC devboards. It is created to switch ARC devboards to use DM_MMC.

It required information such as clocks (Bus Interface Unit clock,
Card Interface Unit clock) and SDIO bus width.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 7892c46..0076fc3 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -24,6 +24,7 @@
 obj-$(CONFIG_MMC_DW_K3)			+= hi6220_dw_mmc.o
 obj-$(CONFIG_MMC_DW_ROCKCHIP)		+= rockchip_dw_mmc.o
 obj-$(CONFIG_MMC_DW_SOCFPGA)		+= socfpga_dw_mmc.o
+obj-$(CONFIG_MMC_DW_SNPS)		+= snps_dw_mmc.o
 obj-$(CONFIG_FSL_ESDHC) += fsl_esdhc.o
 obj-$(CONFIG_FTSDC010) += ftsdc010_mci.o
 obj-$(CONFIG_GENERIC_ATMEL_MCI) += gen_atmel_mci.o