futility: create: Output "wrote XX.vb[pub|pri]k" to stdout

Let's keep stderr for actual errors.

BRANCH=none
BUG=chromium:690773
TEST=make runtests
TEST=futility create key.pem out > /dev/null is quiet

Change-Id: Id7ce658a0dc08f45d4d035b68e355e49d9717674
Reviewed-on: https://chromium-review.googlesource.com/442524
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
diff --git a/futility/cmd_create.c b/futility/cmd_create.c
index bdec20b..1efa23d 100644
--- a/futility/cmd_create.c
+++ b/futility/cmd_create.c
@@ -128,7 +128,7 @@
 		fprintf(stderr, "unable to write private key\n");
 		goto done;
 	}
-	fprintf(stderr, "wrote %s\n", outfile);
+	printf("wrote %s\n", outfile);
 
 	/* Create the public key */
 	ret = vb_keyb_from_rsa(rsa_key, &keyb_data, &keyb_size);
@@ -148,7 +148,7 @@
 		fprintf(stderr, "unable to write public key\n");
 		goto done;
 	}
-	fprintf(stderr, "wrote %s\n", outfile);
+	printf("wrote %s\n", outfile);
 
 	ret = 0;
 
@@ -272,7 +272,7 @@
 			fprintf(stderr, "unable to write private key\n");
 			goto done;
 		}
-		fprintf(stderr, "wrote %s\n", outfile);
+		printf("wrote %s\n", outfile);
 	}
 
 	strcpy(outext, ".vbpubk2");
@@ -280,7 +280,7 @@
 		fprintf(stderr, "unable to write public key\n");
 		goto done;
 	}
-	fprintf(stderr, "wrote %s\n", outfile);
+	printf("wrote %s\n", outfile);
 
 	ret = 0;