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/fs/btrfs/chunk-map.c b/fs/btrfs/chunk-map.c
index 0c9a659..2e5be65 100644
--- a/fs/btrfs/chunk-map.c
+++ b/fs/btrfs/chunk-map.c
@@ -6,6 +6,7 @@
  */
 
 #include "btrfs.h"
+#include <log.h>
 #include <malloc.h>
 
 struct chunk_map_item {