sh: Renesas Solutions SH7763RDP board support

SH7763RDP has SCIF, NOR Flash, Ethernet, USB host, LCDC and MMC.
In this patch, support SCIF, NOR Flash, and Ethernet.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/Makefile b/Makefile
index cc988e1..cb63223 100644
--- a/Makefile
+++ b/Makefile
@@ -2941,6 +2941,11 @@
 	@echo "#define CONFIG_R2DPLUS 1" >> include/config.h
 	@./mkconfig -a $(@:_config=) sh sh4 r2dplus
 
+sh7763rdp_config  :   unconfig
+	@ >include/config.h
+	@echo "#define CONFIG_SH7763RDP 1" >> include/config.h
+	@./mkconfig -a $(@:_config=) sh sh4 sh7763rdp
+
 #========================================================================
 # SPARC
 #========================================================================