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/overlay/cmd_ut_overlay.c b/test/overlay/cmd_ut_overlay.c
index da05079..c001fb1 100644
--- a/test/overlay/cmd_ut_overlay.c
+++ b/test/overlay/cmd_ut_overlay.c
@@ -9,6 +9,7 @@
 #include <errno.h>
 #include <fdt_support.h>
 #include <image.h>
+#include <log.h>
 #include <malloc.h>
 
 #include <linux/sizes.h>