gpio: ks8695: Include the right header

This driver is a pure GPIO driver and should only include
<linux/gpio/driver.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-ks8695.c

@@ -18,7 +18,7 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/init.h>