gpio: gemini: rename to match Faraday IP

The Gemini driver is actually a driver for the Faraday Technology
FTGPIO010 IP block. We rename the driver and the Kconfig symbol and
put in a a new compatible string for the Moxa ART SoC that is also
using this IP block.

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 a386240..2c3f639 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -204,14 +204,15 @@
 	  and write pin state) for GPIO implemented in a number of GE single
 	  board computers.
 
-config GPIO_GEMINI
-	bool "Gemini GPIO"
+config GPIO_FTGPIO010
+	bool "Faraday FTGPIO010 GPIO"
 	depends on ARCH_GEMINI
 	depends on OF_GPIO
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	help
-	  Support for common GPIOs found in Cortina systems Gemini platforms.
+	  Support for common GPIOs from the Faraday FTGPIO010 IP core, found in
+	  Cortina systems Gemini platforms, Moxa ART and others.
 
 config GPIO_GENERIC_PLATFORM
 	tristate "Generic memory-mapped GPIO controller support (MMIO platform device)"