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/fdtdec.c b/lib/fdtdec.c
index c8cbc00..9c4d571 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -9,6 +9,7 @@
 #include <dm.h>
 #include <hang.h>
 #include <init.h>
+#include <log.h>
 #include <malloc.h>
 #include <net.h>
 #include <dm/of_extra.h>