mod_image_for_recovery.sh: Fix unencrypted directory permissions.

/stateful/unencrypted was being created with the file permissions 766, when
it should have been created with 755.

BUG=chromium:432774
TEST=Built a recovery image.

Change-Id: I12766174b0e59c4d864269ca20ba7636be113b51
Reviewed-on: https://chromium-review.googlesource.com/229982
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Alex Deymo <deymo@chromium.org>
Commit-Queue: Don Garrett <dgarrett@chromium.org>
Tested-by: Don Garrett <dgarrett@chromium.org>
1 file changed