ARM: mach-shmobile: ag5evm requires GPIOLIB

Because ag5evm board setup code uses gpio functions,
ARCH_REQUIRE_GPIOLIB should be set in Kconfig.
Otherwise, the first build with defconfig fails.
Signed-off-by: Takashi YOSHII <takashi.yoshii.zj@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/arm/mach-shmobile/Kconfig

@@ -60,6 +60,7 @@ endchoice
 
 config MACH_AG5EVM
 	bool "AG5EVM board"
+	select ARCH_REQUIRE_GPIOLIB
 	depends on ARCH_SH73A0
 
 config MACH_MACKEREL