sh: Add support Renesas Solutions R7780MP

Renesas Solutions R7780MP is a reference board on SH7780.
This board has serial, 10/100 base Ethernet deivice, CF slot
and VGA devices. This board can set extension board.
Extension board has 10/100/1000 base Ethernet device, PCI slot,
S-ATA, iDVR slot.

Signed-off-by: Yusuke Goda <goda.yusuke@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/Makefile b/Makefile
index 0192886..948108b 100644
--- a/Makefile
+++ b/Makefile
@@ -2857,6 +2857,11 @@
 	@echo "#define CONFIG_MIGO_R 1" >> include/config.h
 	@./mkconfig -a $(@:_config=) sh sh4 MigoR
 
+r7780mp_config: unconfig
+	@ >include/config.h
+	@echo "#define CONFIG_R7780MP 1" >> include/config.h
+	@./mkconfig -a $(@:_config=) sh sh4 r7780mp
+
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