linux-postmarketos-qcom-sdm845: upgrade to 5.16.12 (MR 2986)

For a merge list, please see the merge commits:
  - 5.16.6  - (https://gitlab.com/sdm845-mainline/linux/-/commit/521f32a4e0920b3ef3bc29fd0a6811dbe8c6f21a)
  - 5.16.7  - (https://gitlab.com/sdm845-mainline/linux/-/commit/36f968514b328e4dae65ca4503707643f691b3e8)
  - 5.16.8  - (https://gitlab.com/sdm845-mainline/linux/-/commit/3023f6e3b7d4c1e4d10efc603fbe0d6e333a39f4)
  - 5.16.9  - (https://gitlab.com/sdm845-mainline/linux/-/commit/a87b941715f881a715add95260cff3699063073c)
  - 5.16.10 - (https://gitlab.com/sdm845-mainline/linux/-/commit/eb85bcb0a34a8620fe0b3f2bb04d3ed4fa64d31f)
  - 5.16.11 - (https://gitlab.com/sdm845-mainline/linux/-/commit/73291a1c42e0696daf0ccd8c5e89481579d4fad7)
  - 5.16.12 - (https://gitlab.com/sdm845-mainline/linux/-/commit/77c0e13ec39469a2e3057e1c1853f425626b50e4

)

Change-Id: I806a2c57793e7815d24b57cf46621b9ec5d10f3b
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>

[ci:skip-build] Already built fine on CI in MR