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/bus.c b/test/dm/bus.c
index 1ad45ad..73eb3ae 100644
--- a/test/dm/bus.c
+++ b/test/dm/bus.c
@@ -5,6 +5,7 @@
 
 #include <common.h>
 #ifdef CONFIG_SANDBOX
+#include <log.h>
 #include <os.h>
 #endif
 #include <dm.h>