sh: Add RSK2+SH7264 board

The RSK2+SH7264 board uses the sh7264 processor. It is often
referred to as just rsk7264. NOR Flash, SDRAM, serial, USB Host and
ethernet are working.

Signed-off-by: Phil Edworthy <phil.edworthy@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 6dd56c4..d007c81 100644
--- a/arch/sh/tools/mach-types
+++ b/arch/sh/tools/mach-types
@@ -51,6 +51,7 @@
 MIGOR			SH_MIGOR
 RSK7201			SH_RSK7201
 RSK7203			SH_RSK7203
+RSK7264			SH_RSK7264
 AP325RXA		SH_AP325RXA
 SH2007			SH_SH2007
 SH7757LCR		SH_SH7757LCR