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>

board/renesas/sh7757lcr/sh7757lcr.c

@@ -263,6 +263,11 @@ int dram_init(void)
 	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;