Claude review: drm/tyr: Use register! macro for GPU_CONTROL

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

The major patch converting all GPU_CONTROL registers. Well done overall.

The `GPU_COMMAND` register uses an interesting pattern with layout aliases (`GPU_COMMAND_RESET`, `GPU_COMMAND_FLUSH`) via `=> GPU_COMMAND` to handle the multiple command formats. The constructor methods on `GPU_COMMAND` (`.reset()`, `.flush_caches()`, `.clear_fault()`) provide a clean API.

Minor: The `Io` import uses a trailing `//` comment as a formatting hint:
```rust
    io::{
        poll,
        Io, //
    },
```
This is a rustfmt workaround to force multi-line formatting – functional but slightly unusual.

The `ExceptionType` enum at `Bounded<u32, 8>` (8-bit field) correctly covers GPU fault types 0x00, 0x80, 0x88, 0x89, 0x8A, all of which fit in 8 bits.

The `with_const_request::<1>()` call in `l2_power_on` is a nice use of const generics for compile-time-known values.

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Generated by Claude Code Patch Reviewer