mkimage: fit: don't create image with 0700 permissions

commit 7298e422 ("mkimage: fit: add support to encrypt image with
aes") added a new copyfile() function as part of the FIT image creation
flow. This function as currently written creates the final image with a
mode of 0700 (before umask), differing from the old behavior of 0666.
Since there doesn't seem to be any reason to make the image executable
or non-group, non-other readable, change the mask to 0666 to preserve
the old behavior.

Fixes: 7298e422 ("mkimage: fit: add support to encrypt image with aes")
Signed-off-by: NThomas Hebb <tommyhebb@gmail.com>

tools/fit_image.c

@@ -642,7 +642,7 @@ static int copyfile(const char *src, const char *dst)
 		goto out;
 	}
 
-	fd_dst = open(dst, O_WRONLY | O_CREAT, 0700);
+	fd_dst = open(dst, O_WRONLY | O_CREAT, 0666);
 	if (fd_dst < 0) {
 		printf("Can't open file %s (%s)\n", dst, strerror(errno));
 		goto out;