drm/amd/display: Fix signedness mismatches in cm3

[Why]
In cm3_helper_translate_curve_to_degamma_hw_format(), seg_distr[] and
the loop counter k are uint32_t, while -1, region_start/region_end and
i are signed. Comparing them relies on implicit integer conversions,
which some compilers diagnose and which obscures the intent of the
comparisons.

[How]
Add explicit casts so the signedness of each comparison is stated in
the code. No functional change.

Assisted-by: Copilot:Claude-Opus-5
Reviewed-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

0 files changed, 0 insertions, 0 deletions