Use log_info() throughout

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/verify.c b/verify.c
index 643e782..a9441b4 100644
--- a/verify.c
+++ b/verify.c
@@ -38,8 +38,8 @@
 	int i;
 
 	for (i = 0; i < len; i++)
-		fprintf(f_out, "%02x", p[i]);
-	fprintf(f_out, "\n");
+		log_info("%02x", p[i]);
+	log_info("\n");
 }
 
 static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u)