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/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c
index 65fd238..23fef21 100644
--- a/drivers/watchdog/sp805_wdt.c
+++ b/drivers/watchdog/sp805_wdt.c
@@ -5,6 +5,7 @@
  * Copyright 2019 NXP
  */
 
+#include <log.h>
 #include <asm/io.h>
 #include <common.h>
 #include <clk.h>