net: mediatek: Explicitly include pinctrl headers

The Mediatek ethernet driver fails to build after commit 23c35f48
("pinctrl: remove include file from <linux/device.h>") because it relies
on the pinctrl/consumer.h and pinctrl/devinfo.h being pulled in by the
device.h header implicitly.

Include these headers explicitly to avoid the build failure.

Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/net/ethernet/mediatek/mtk_eth_soc.c

@@ -23,6 +23,7 @@
 #include <linux/reset.h>
 #include <linux/tcp.h>
 #include <linux/interrupt.h>
+#include <linux/pinctrl/devinfo.h>
 
 #include "mtk_eth_soc.h"