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/test/dm/ofnode.c b/test/dm/ofnode.c
index 07d5c7d..1114f34 100644
--- a/test/dm/ofnode.c
+++ b/test/dm/ofnode.c
@@ -2,6 +2,7 @@
 
 #include <common.h>
 #include <dm.h>
+#include <log.h>
 #include <dm/of_extra.h>
 #include <dm/test.h>
 #include <test/ut.h>