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

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

Acked-by: Angelo Dureghello <angelo@kernel-space.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/watchdog/mcf_wdt.c b/drivers/watchdog/mcf_wdt.c
index b36488b..5092a25 100644
--- a/drivers/watchdog/mcf_wdt.c
+++ b/drivers/watchdog/mcf_wdt.c
@@ -6,7 +6,7 @@
  *
  */
 
-#include <common.h>
+#include <config.h>
 #include <dm.h>
 #include <hang.h>
 #include <asm/io.h>