gpio: Remove <common.h> and add needed includes

Remove <common.h> from this driver directory and when needed
add missing include files directly.

Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>

drivers/gpio/imx_rgpio2p.c

@@ -5,7 +5,6 @@
  * RGPIO2P driver for the Freescale i.MX7ULP.
  */
 
-#include <common.h>
 #include <dm.h>
 #include <errno.h>
 #include <fdtdec.h>