panfrost: Misc Bifrost fixes
A bunch of these were sprawled across personal branches, etc. Let's land them.
As a bonus, this has the last cmdstream hack cleaned up and fixed, so Dvalin should work on master once probed.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
A bunch of these were sprawled across personal branches, etc. Let's land them.
As a bonus, this has the last cmdstream hack cleaned up and fixed, so Dvalin should work on master once probed.