sh: Add RSK2+SH7269 board

The RSK2+SH7269 board uses the SH7269 processor. It is often
referred to as just rsk7269. 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>

arch/sh/boards/Kconfig

@@ -133,7 +133,8 @@ config SH_RTS7751R2D
 
 config SH_RSK
 	bool "Renesas Starter Kit"
-	depends on CPU_SUBTYPE_SH7201 || CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7264
+	depends on CPU_SUBTYPE_SH7201 || CPU_SUBTYPE_SH7203 || \
+	  CPU_SUBTYPE_SH7264 || CPU_SUBTYPE_SH7269
 	help
 	 Select this option if configuring for any of the RSK+ MCU
 	 evaluation platforms.