leds: lp3952: Include the right header

This driver is using the GPIO descriptor API properly
as it should be but is including the legacy GPIO header
<linux/gpio.h>. Fix it by including <linux/gpio/consumer.h>
instead.

Cc: Tony Makkiel <tony.makkiel@daqri.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>

drivers/leds/leds-lp3952.c

@@ -7,7 +7,7 @@
  */
 
 #include <linux/delay.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/io.h>
 #include <linux/kernel.h>