pinctrl: sx150x: fix up headers

Include <linux/gpio/driver.h> rather than <linux/gpio.h>
Drop <linux/pinctrl/machine.h>.

Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-sx150x.c

@@ -27,8 +27,7 @@
 #include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/gpio.h>
-#include <linux/pinctrl/machine.h>
+#include <linux/gpio/driver.h>
 #include <linux/pinctrl/pinconf.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/pinctrl/pinmux.h>