ARM: mach-shmobile: R-Mobile A1 support.

This adds preliminary support for the R8A7740 (R-Mobile A1) CPU

Timer, serial, gic, clock are supported at this point.
This patch is based on v0.1 manual

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index 0828fab..329a3cb 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -28,6 +28,13 @@
 	select ARM_GIC
 	select I2C
 
+config ARCH_R8A7740
+	bool "R-Mobile A1 (R8A77400)"
+	select CPU_V7
+	select SH_CLK_CPG
+	select ARCH_WANT_OPTIONAL_GPIOLIB
+	select ARM_GIC
+
 comment "SH-Mobile Board Type"
 
 config MACH_G3EVM