linux-imx

arm/mxc: move IMX_GPIO_NR into mach/hardware.h

The patch moves IMX_GPIO_NR into mach/hardware.h, so that we only
use standard gpiolib helpers in mach/gpio.h.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>