Claude review: drm/amd/display: Fix gamma 2.2 colorop TFs

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

Patch Review

**Correctness: Good.** The three swaps are all consistent with the established pattern of the other TFs in each list:

1. `amdgpu_dm_supported_degam_tfs`: `GAMMA22_INV` → `GAMMA22` — degamma linearizes, so it needs the forward (EOTF-like) curve, matching `SRGB_EOTF` and `PQ_125_EOTF` already in the list.

2. `amdgpu_dm_supported_shaper_tfs`: `GAMMA22` → `GAMMA22_INV` — shaper de-linearizes, so it needs the inverse curve, matching `SRGB_INV_EOTF` and `PQ_125_INV_EOTF` already in the list.

3. `amdgpu_dm_supported_blnd_tfs`: `GAMMA22_INV` → `GAMMA22` — blend linearizes (same direction as degamma), consistent with the identical set of other TFs shared with degamma.

**Minor nit on the commit message:** The body says "Use GAMMA22 for degamma/blend and GAMMA22_INV for shaper so curves match the color pipeline" — this is accurate and concise but could benefit from a brief note about *why* the previous assignment was wrong (the forward/inverse were swapped). This is purely a style suggestion and not blocking.

**Reviewed-by worthy.** The patch has a clear bug report link, a `Tested-by` from the reporter, and the fix is mechanically obvious once you understand the EOTF/OETF naming convention. No further issues found.

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