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

PinebookPro U-Boot 2022.04
https://github.com/void-linux/void-packages/pull/37313

Description:
Note: this gets deep suspend working.

- atf-rk3399-bl31: update to 2.6
- pinebookpro-uboot: update to 2022.04

#### Testing the changes
- I tested the changes in this PR: **YES**

#### Local build testing
- I built this PR locally for these architectures (if supported. mark crossbuilds):
  - aarch64 (cross)