ARM: gemini: select gemini poweroff

It's especially annoying if the system cannot be properly
powered down so select the poweroff driver from the Kconfig.

Cc: Janos Laube <janos.dev@gmail.com>
Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/mach-gemini/Kconfig

@@ -7,6 +7,7 @@ menuconfig ARCH_GEMINI
 	select GPIO_GEMINI
 	select GPIOLIB
 	select POWER_RESET
+	select POWER_RESET_GEMINI_POWEROFF
 	select POWER_RESET_SYSCON
 	select SERIAL_OF_PLATFORM
 	help