gpio: moxart: Switch to using the FTGPIO010 driver

This just deletes the Moxa ART driver and replaces it with the
more versatile Faraday FTGPIO010 driver.

Make this default on for ARCH_GEMINI and ARCH_MOXART so we do
not get Kconfig glitches.

Tested-by: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 2c3f639..d6e3cfd 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -206,10 +206,10 @@
 
 config GPIO_FTGPIO010
 	bool "Faraday FTGPIO010 GPIO"
-	depends on ARCH_GEMINI
 	depends on OF_GPIO
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
+	default (ARCH_GEMINI || ARCH_MOXART)
 	help
 	  Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
 	  Cortina systems Gemini platforms, Moxa ART and others.
@@ -309,14 +309,6 @@
 	  tools/testing/selftests/gpio/gpio-mockup.sh. Reference the usage in
 	  it.
 
-config GPIO_MOXART
-	bool "MOXART GPIO support"
-	depends on ARCH_MOXART || COMPILE_TEST
-	select GPIO_GENERIC
-	help
-	  Select this option to enable GPIO driver for
-	  MOXA ART SoC devices.
-
 config GPIO_MPC5200
 	def_bool y
 	depends on PPC_MPC52xx