Claude review: drm/amd/display: use plane color_mgmt_changed to track colorop changes

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

Patch Review

**Status: Looks good**

Driver-side consumption of the new `plane_state->color_mgmt_changed` flag in two places in `amdgpu_dm.c`:

1. `amdgpu_dm_commit_planes`: Extends the existing CRTC `color_mgmt_changed` check to also trigger on plane-level changes:
```c
if (new_pcrtc_state->color_mgmt_changed || new_plane_state->color_mgmt_changed) {
```

2. `should_reset_plane`: Adds a new check that forces plane reset when color management changed:
```c
if (new_plane_state->color_mgmt_changed)
    return true;
```

Both are straightforward and correct. The comment "Plane color pipeline or its colorop changes." is acceptable. This patch fixes the actual user-visible bug (gamescope night mode shaper/3D LUT updates not taking effect).

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**Summary of required changes:**
- **Must fix**: Squash the `drm_colorop.c` syntax fixes from Patch 5 into Patch 4 to fix the build breakage and maintain bisectability. The two-character changes (`));` → `))` and `&val);` → `&val))`) belong where the code was introduced.

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Generated by Claude Code Patch Reviewer