linux-postmarketos-qcom-sdm845: upgrade to 5.16-rc4

Finally a new upgrade! This brings along some minor driver changes and improvements, more stuff slowly landing upstream.

We also get a few new splats during boot, these are inevitable at this point due to fw_devlink changes and large reworking of the drm/msm code, they are caused by the common clock framework not knowing that some clocks are left enabled by the bootloader, it panics when they aren't in a state it expects. They are harmless as far as I know.

We now have a very rudimentary smb2 charger driver, uncovering a bug in G-C-C where "USB" type power supplies are treated as batteries. It may also partially fix the slow charging speeds previously experience, although I haven't had a chance to test this properly.

Cc: @sdm845-mainline

Will mark as ready once Joel and others have tested it and confirmed we haven't broken any devices.