Add platform specific functionality for the DW SD/MMC driver for
SoCFPGA. Move SDMMC_CMD_USE_HOLD_REG to dw_mmc.h so other platforms
can use this define.
Signed-off-by: NDinh Nguyen <dinguyen@altera.com>
Reviewed-by: NPavel Machek <pavel@denx.de>
Acked-by: NJaehoon Chung <jh80.chung@samsung.com>
Acked-by: NOlof Johansson <olof@lixom.net>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com
Signed-off-by: NChris Ball <cjb@laptop.org>