sh: Add support SH3 and SH7720

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
CC: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Acked-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/cpu/sh3/Makefile b/cpu/sh3/Makefile
new file mode 100644
index 0000000..7679248
--- /dev/null
+++ b/cpu/sh3/Makefile
@@ -0,0 +1,49 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2007
+# Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+#
+# (C) Copyright 2007
+# Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(CPU).a
+
+START	= start.o
+OBJS	= cpu.o interrupts.o watchdog.o time.o cache.o
+
+all:	.depend $(START) $(LIB)
+
+$(LIB):	$(OBJS)
+	$(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend:	Makefile $(START:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CFLAGS) $(START:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################