gpio: dwapb: don't include gpiolib.h

The gpiolib.h is unnecessarily included in the driver. None of its
symbols are used so drop it.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/gpio/gpio-dwapb.c

@@ -21,7 +21,6 @@
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 
-#include "gpiolib.h"
 #include "gpiolib-acpi.h"
 
 #define GPIO_SWPORTA_DR		0x00