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/axi.c b/test/dm/axi.c
index e234ab8..289f07a 100644
--- a/test/dm/axi.c
+++ b/test/dm/axi.c
@@ -7,6 +7,7 @@
 #include <common.h>
 #include <axi.h>
 #include <dm.h>
+#include <log.h>
 #include <dm/test.h>
 #include <test/ut.h>
 #include <asm/axi.h>