ARM: ux500: included linux/gpio.h twice

arch/arm/mach-ux500/board-mop500-u8500uib.c included 'linux/gpio.h'
remove the duplicate.
Signed-off-by: Danny Kukawka <danny.kukawka@bisect.de>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/mach-ux500/board-mop500-u8500uib.c

@@ -8,7 +8,6 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
-#include <linux/gpio.h>
 #include <linux/interrupt.h>
 #include <linux/mfd/tc3589x.h>
 #include <linux/input/matrix_keypad.h>