mmc: dw_mmc: Add support for ARC

Adapt Kconfig to include ARC in supported architectures
Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

drivers/mmc/host/Kconfig

@@ -530,7 +530,7 @@ config SDH_BFIN_MISSING_CMD_PULLUP_WORKAROUND
 
 config MMC_DW
 	tristate "Synopsys DesignWare Memory Card Interface"
-	depends on ARM
+	depends on ARC || ARM
 	help
 	  This selects support for the Synopsys DesignWare Mobile Storage IP
 	  block, this provides host support for SD and MMC interfaces, in both