libtss2-udev was part of tpm2-tss when it was MIR+Security reviewed in
Disco.

The new tpm-udev package was split out after that review to be re-usable in 
different places.
But the content is exactly what was reviewed:

Disco:

$ dpkg -L libtss2-udev
/.
/lib
/lib/udev
/lib/udev/rules.d
/lib/udev/rules.d/60-libtss2-udev.rules
/usr
/usr/share
/usr/share/doc
/usr/share/doc/libtss2-udev
/usr/share/doc/libtss2-udev/changelog.Debian.gz
/usr/share/doc/libtss2-udev/copyright
/var
/var/lib
/var/lib/tpm
$ md5sum /lib/udev/rules.d/60-libtss2-udev.rules
29b0b97d7fbee510da26feb36f5222e5  /lib/udev/rules.d/60-libtss2-udev.rules

Focal:
$ dpkg -L tpm-udev
/.
/lib
/lib/udev
/lib/udev/rules.d
/lib/udev/rules.d/60-tpm-udev.rules
/usr
/usr/share
/usr/share/doc
/usr/share/doc/tpm-udev
/usr/share/doc/tpm-udev/changelog.gz
/usr/share/doc/tpm-udev/copyright
/var
/var/lib
/var/lib/tpm
$ md5sum /lib/udev/rules.d/60-tpm-udev.rules
29b0b97d7fbee510da26feb36f5222e5  /lib/udev/rules.d/60-tpm-udev.rules

See that even the md5 on the rules is the same that was reviewed in
https://bugs.launchpad.net/ubuntu/+source/tpm2-tss/+bug/1841595/comments/6
already.

The changes since then are in the postinst (as that is its main
function).

That covers:
- mark libtss2-udev Multi-Arch: foreign (Closes: #941146)                    
- call udevadm trigger after installing libtss2-udev (Closes: #940642)       
- /var/lib/tpm/ not owned by tss user/group (Closes: #940643)

All of these seem right and not security critical (well the last is even
an improvement).

Therefore since all the content was actually already reviewed and the
packaging on this seems to be fine as well IMHO we can fast-path this to
the same approved state as the base MIR in bug 1841595.

MIR - ack
Security - no review needed (not again)

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https://bugs.launchpad.net/bugs/1852347

Title:
  [MIR] tpm-udev

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