drm/amd/display: Test accepted plane atomic check

[WHAT]
Add a KUnit test for amdgpu_dm_plane_atomic_check() covering the
success path taken once DC validation accepts the plane.

[HOW]
Extend the shared atomic-check fixture with a resource pool that has
no validate_plane callback, so dc_validate_plane() only inspects the
source and destination rectangles.

Assisted-by: Copilot:Claude-Opus-5
Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Chenyu Chen <chen-yu.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

0 files changed, 0 insertions, 0 deletions