[hw,mbx] Sync mailbox from integrated_dev to master

[Razer6]

No description provided.

[hcallahan-lowrisc]

Reviewed with the PR branch at dace55d

I've just been looking at this today, and it seems that some commits have been squashed together as part of the migration. For example, 0a2ca18 appears to have been squashed into 978e5c5 to create 382a08a, as well as some other changes at the same time. Was this intentional? It's making the reviewing process tricky, as it's harder to see any new or unintended changes made as part of the migration. I can probably power through if it would be too difficult to go backwards now, but it's going to take me longer to work through.
The script I'm using to try and simplify the review process is telling me the following:

Number of commits touching hw/ip/mbx in original branch : 86
Number of commits in migration branch (PR) : 73
WARNING: the following 15 commits may not have been migrated:
Lost commit : 0a2ca184b210 [hw,rtl,mbx] System register interface implementation
Lost commit : 240988180280 [hw,mbx,rtl] Implement DOE IRQ support
Lost commit : 6cfc94ea41e4 [hw,mbx,rtl] Use Mubi-regwen for range config
Lost commit : 68c211772acb [hw,mbx,rtl] Remove Async message support registers
Lost commit : aed591a6a0bf [hw,mbx,rtl] Remove hostif.status.ready register
Lost commit : 61b9d6fd5f23 [mbx] Rename SoC-facing port to `soc`
Lost commit : 3cc3af9c49c3 [hw,mbx,rtl] Move error bit from HOST.STATUS to HOST.CONTROL
Lost commit : 424e50afe822 [hw,mbx,rtl] More concise register definition
Lost commit : a81183fa5e3e [hw,mbx,rtl] Rename DOE IRQ signals on host side
Lost commit : 664199cd6dc7 [hw,mbx,rtl] Busy is fully hardware controlled
Lost commit : 354ea3b1fd6d [hw,mbx,rtl] Fix permissions on CORE.STATUS and SOC.CONTROL
Lost commit : 6d22e32b9a8d [mbx] Stable Ready bit required in ombx assertion
Lost commit : 7d2a40351e9d [hw,mbx,rtl] Add CSR registers for asynchronous message support
Lost commit : 6557ab1c9ff7 [hw,mbx,rtl] Add top-level strap for async message support
Lost commit : bb2f84a3b6c6 [hw,mbx,rtl] Add an error IRQ to notify host
WARNING: the following 2 commits may have been added:
Added commit : 87b2faeff6d9 [hw,mbx] Update source files with new license header
Added commit : dace55df6457 [hw,mbx] Update bazel rules for generating C/Rust headers

Quite a few of the 'lost' commits appear to have been squashed into their neighbors.
Thanks

[Razer6]

That is strange. No that is not intentional. Let, me try that again and see if I get a different list of commits.

[Razer6]

@hcallahan-lowrisc Not sure what happened here. They are indeed lost and squashed. I re-created the PR with all commits in #24687