x86: broadwell: Add a GPIO driver

Add a GPIO driver for the GPIO peripheral found on broadwell devices.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index ca8c487..e7b7ec4 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -14,6 +14,7 @@
 obj-$(CONFIG_AT91_GPIO)	+= at91_gpio.o
 obj-$(CONFIG_ATMEL_PIO4)	+= atmel_pio4.o
 obj-$(CONFIG_INTEL_ICH6_GPIO)	+= intel_ich6_gpio.o
+obj-$(CONFIG_INTEL_BROADWELL_GPIO)	+= intel_broadwell_gpio.o
 obj-$(CONFIG_KIRKWOOD_GPIO)	+= kw_gpio.o
 obj-$(CONFIG_KONA_GPIO)	+= kona_gpio.o
 obj-$(CONFIG_MARVELL_GPIO)	+= mvgpio.o