There is a new pull request by Skirmisher against master on the void-packages repository

https://github.com/Skirmisher/void-packages upstream-master
https://github.com/void-linux/void-packages/pull/34712

firefox-esr: update to 91.4.0, add ppc64le JIT patch
This PR includes a monolithic patch for completed second-stage JIT functionality for Firefox on POWER9 little-endian, described [here](https://www.talospace.com/2021/12/91esr-with-baseline-compilerbaseline.html) ([patch source](https://github.com/chmeeedalf/gecko-dev/issues/2)). The code is self-contained, and other platforms should be completely unaffected. The baseline for Void on ppc64le is POWER8, which is not (yet) supported by this JIT, but Firefox will detect this at runtime and disable the JIT if not running on POWER9. (However, this appears to be untested.)

This is marked as a draft because I haven't built it yet; I should be able to try it out soon, but I wanted to get the PR out there so folks could test it if they're so inclined.

This PR supersedes #34447.

[ci skip]

A patch file from https://github.com/void-linux/void-packages/pull/34712.patch is attached