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/libavb/avb_descriptor.c b/lib/libavb/avb_descriptor.c
index 86b8d1b..56a3a91 100644
--- a/lib/libavb/avb_descriptor.c
+++ b/lib/libavb/avb_descriptor.c
@@ -6,6 +6,7 @@
 #include "avb_descriptor.h"
 #include "avb_util.h"
 #include "avb_vbmeta_image.h"
+#include <log.h>
 #include <malloc.h>
 
 bool avb_descriptor_validate_and_byteswap(const AvbDescriptor* src,