gpio: dwapb: re-enable GPIO_DWAPB for arm64

Hisilicon arm64 soc uses designWare gpio, re-enable it after
commit 1972c97d(gpio: dwapb: fix compile errors).
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/Kconfig

@@ -148,7 +148,7 @@ config GPIO_GENERIC_PLATFORM
 
 config GPIO_DWAPB
 	tristate "Synopsys DesignWare APB GPIO driver"
-	depends on ARM
+	depends on ARM || ARM64
 	depends on OF_GPIO
 	select GPIO_GENERIC
 	select GENERIC_IRQ_CHIP