ARM: 7244/1: mach-shmobile: Use CONFIG_ARCH_NR_GPIO

Add default value for CONFIG_ARCH_NR_GPIO to Kconfig and remove the
definition in gpio.h.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 003b7d0..dbd2cb1 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1567,7 +1567,7 @@
 
 config ARCH_NR_GPIO
 	int
-	default 1024 if ARCH_TEGRA
+	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
 	default 0
 	help
 	  Maximum number of GPIOs in the system.