media: cxd2820r: include the right header

This driver is just using <gpio/driver.h> so include that and
not the legacy <linux/gpio.h> header.

Cc: Antti Palosaari <crope@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/dvb-frontends/cxd2820r_priv.h

@@ -13,7 +13,7 @@
 #include <media/dvb_frontend.h>
 #include <media/dvb_math.h>
 #include "cxd2820r.h"
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h> /* For gpio_chip */
 #include <linux/math64.h>
 #include <linux/regmap.h>