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/board/freescale/common/mpc85xx_sleep.c b/board/freescale/common/mpc85xx_sleep.c
index 739a416..6f6f4d4 100644
--- a/board/freescale/common/mpc85xx_sleep.c
+++ b/board/freescale/common/mpc85xx_sleep.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <log.h>
 #include <asm/immap_85xx.h>
 #include "sleep.h"
 #ifdef CONFIG_U_QE