arm: Remove CONFIG_ARCH_NR_GPIO

CONFIG_ARCH_NR_GPIO is not used anymore, remove it.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

arch/arm/Kconfig

@@ -1155,27 +1155,6 @@ config ARM_PSCI
 	  0022A ("Power State Coordination Interface System Software on
 	  ARM processors").
 
-# The GPIO number here must be sorted by descending number. In case of
-# a multiplatform kernel, we just want the highest value required by the
-# selected platforms.
-config ARCH_NR_GPIO
-	int
-	default 2048 if ARCH_INTEL_SOCFPGA
-	default 1024 if ARCH_BRCMSTB || ARCH_RENESAS || ARCH_TEGRA || \
-		ARCH_ZYNQ || ARCH_ASPEED
-	default 512 if ARCH_EXYNOS || ARCH_KEYSTONE || SOC_OMAP5 || \
-		SOC_DRA7XX || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210
-	default 416 if ARCH_SUNXI
-	default 392 if ARCH_U8500
-	default 352 if ARCH_VT8500
-	default 288 if ARCH_ROCKCHIP
-	default 264 if MACH_H4700
-	default 0
-	help
-	  Maximum number of GPIOs in the system.
-
-	  If unsure, leave the default value.
-
 config HZ_FIXED
 	int
 	default 128 if SOC_AT91RM9200