gpio: mxs: Remove netdev.h

The MXS certainly does not support any sort of networking in GPIO code,
remove the netdev.h header.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: NSimon Glass <sjg@chromium.org>

drivers/gpio/mxs_gpio.c

@@ -8,7 +8,6 @@
  */
 
 #include <common.h>
-#include <netdev.h>
 #include <asm/errno.h>
 #include <asm/io.h>
 #include <asm/arch/iomux.h>