gpio: xgene-sb: 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-xgene-sb.c

@@ -15,7 +15,6 @@
 #include <linux/gpio/driver.h>
 #include <linux/acpi.h>
 
-#include "gpiolib.h"
 #include "gpiolib-acpi.h"
 
 /* Common property names */