ostree-prepare-root: print st_dev and st_ino as 64-bit ints
ostree-prepare-root: print st_dev and st_ino as 64-bit ints

This matches what systemd does and should work fine on all platforms.

Possibly resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1888436

GNOME/ostree,GNOME/ostree,GNOME/ostree,GNOME/ostree,GNOME/ostree