Bug 32355: Add linux-arm mozconfig (v2)

JeremyRandrequested to merge
JeremyRand/tor-browser:armhf-mozconfig-esr102-v2 into tor-browser-102.2.0esr-12.0-1

Supercedes !349 (closed).

First time using the fixup commit workflow, hopefully I did it right.

Merge request reports