common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/watchdog/ftwdt010_wdt.c b/drivers/watchdog/ftwdt010_wdt.c
index 076d801..6aed416 100644
--- a/drivers/watchdog/ftwdt010_wdt.c
+++ b/drivers/watchdog/ftwdt010_wdt.c
@@ -14,6 +14,7 @@
  */
 
 #include <common.h>
+#include <log.h>
 #include <watchdog.h>
 #include <asm/io.h>
 #include <faraday/ftwdt010_wdt.h>