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

[jlebon]

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

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

[jlebon]

Wait no, I don't think this is right actually.
/hold

[jlebon]

OK digging into the type of st_ino is confusing here because it also depends on whether LFS is enabled. Let's just match what systemd does and always cast to uint64_t. ⬆️

/hold cancel

[cgwalters]

Ah right we're passing a 64 bit value in args but systemd is only shifting 32.

It's unfortunate this isn't caught by the compiler...probably gcc isn't smart enough to understand the systemd journaling API?

[cgwalters]

/lgtm
/hold
for manual testing

[openshift-ci-robot]

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[cgwalters]

/hold cancel
This fix makes sense even if there are other bugs.