ARM: do away with final ARCH_REQUIRE_GPIOLIB

A new user of the Kconfig selection of ARCH_REQUIRE_GPIOLIB
has appeared. Replace with just selecting GPIOLIB.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/mach-clps711x/Kconfig

 menuconfig ARCH_CLPS711X
 	bool "Cirrus Logic EP721x/EP731x-based"
 	depends on ARCH_MULTI_V4T
-	select ARCH_REQUIRE_GPIOLIB
 	select AUTO_ZRELADDR
 	select CLKSRC_OF
 	select CLPS711X_TIMER
 	select COMMON_CLK
 	select CPU_ARM720T
 	select GENERIC_CLOCKEVENTS
+	select GPIOLIB
 	select MFD_SYSCON
 	select OF_IRQ
 	select USE_OF