gpio: xlp: Include the right header

This is a GPIO driver so include only <linux/gpio/driver.h>.

Cc: Kamlakant Patel <kamlakant.patel@cavium.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-xlp.c

@@ -12,7 +12,7 @@
  * GNU General Public License for more details.
  */
 
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
 #include <linux/platform_device.h>
 #include <linux/of_device.h>
 #include <linux/module.h>