sh: sh7757lcr: add supporting for MMCIF

The sh7757lcr has 2GByte eMMC chip. This patch supports it.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/sh7757lcr/sh7757lcr.c b/board/renesas/sh7757lcr/sh7757lcr.c
index a62be24..adae9ce 100644
--- a/board/renesas/sh7757lcr/sh7757lcr.c
+++ b/board/renesas/sh7757lcr/sh7757lcr.c
@@ -263,6 +263,11 @@
 	return 0;
 }
 
+int board_mmc_init(bd_t *bis)
+{
+	return mmcif_mmc_init();
+}
+
 static int get_sh_eth_mac_raw(unsigned char *buf, int size)
 {
 	struct spi_flash *spi;