There's a closed pull request on the void-packages repository

pinebookpro-firmware: update to 0.0.20220515, fix dead links.
https://github.com/void-linux/void-packages/pull/49200

Description:
This is firmware for broadcom 43456

It's unclear if this firmware is needed at all.

linux-firmware has broadcom 43455 with patchset for pinebookpro

Manajro has license as "unknown".

The linux-firmware mailing suggests that the firmware hasn't been upstreamed due to licensing issues:
https://lore.kernel.org/linux-firmware/CAMEGJJ2XYvGEekfLzjL1KE6VUF-71s+S8RbJ1DuBkYU98F9nsg@mail.gmail.com/

Should void be distributing this at all?

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