ARM: w90x900: delete <mach/gpio.h>
ARM: w90x900: delete <mach/gpio.h>

The local <mach/gpio.h> file on the w90x900 is completely unused
and the platform does not define NEED_MACH_GPIO_H.

Cc: Wan ZongShun <7d90017055ae88f9b614c1a99b7a29176cffa725@gmail.com>
Signed-off-by: Linus Walleij <9cd9d802d23c0ed5e224beabf4ae4a5c478746ef@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs