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/lib/of_live.c b/lib/of_live.c
index c49e95e..05a45ed 100644
--- a/lib/of_live.c
+++ b/lib/of_live.c
@@ -9,6 +9,7 @@
  */
 
 #include <common.h>
+#include <log.h>
 #include <linux/libfdt.h>
 #include <of_live.h>
 #include <malloc.h>