sh: espt-giga board support

This adds support for the ESPT-Giga (Ethernet Serial Parallel
Translator) SH7763-based reference board.

Board support is relatively sparse, presently supporting serial,
gigabit ethernet, USB host, and MTD.

More information (in Japanese) available at:

	http://www.cente.jp/product/cente_hard/ESPT-Giga.html

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/tools/mach-types b/arch/sh/tools/mach-types
index 8f9e166..4932705 100644
--- a/arch/sh/tools/mach-types
+++ b/arch/sh/tools/mach-types
@@ -53,3 +53,4 @@
 SH7763RDP		SH_SH7763RDP
 SH7785LCR		SH_SH7785LCR
 URQUELL			SH_URQUELL
+ESPT			SH_ESPT