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/image-sparse.c b/lib/image-sparse.c
index 3170c02..187ac28 100644
--- a/lib/image-sparse.c
+++ b/lib/image-sparse.c
@@ -39,6 +39,7 @@
 #include <blk.h>
 #include <image-sparse.h>
 #include <div64.h>
+#include <log.h>
 #include <malloc.h>
 #include <part.h>
 #include <sparse_format.h>