gpio: octeon: Include the right header

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

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-octeon.c

@@ -9,7 +9,7 @@
 #include <linux/platform_device.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
 #include <linux/io.h>
 
 #include <asm/octeon/octeon.h>