sh: add support for sh7753evb board

The SH7753 EVB board has SH7753, 512MB DDR3-SDRAM, SPI ROM,
Gigabit Ethernet, and eMMC.

This patch support the following functions:
 - 512MB DDR3-SDRAM, SCIF4, SPI ROM, Gigabit Ethernet, eMMC

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/sh7753evb/Makefile b/board/renesas/sh7753evb/Makefile
new file mode 100644
index 0000000..f7c8e94
--- /dev/null
+++ b/board/renesas/sh7753evb/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2012  Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+
+obj-y	:= sh7753evb.o spi-boot.o
+obj-y	+= lowlevel_init.o