drm/amd/display: add comments to add plane functions

Adding detail comments describing the problem we are solving with add
plane function.

Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Wenjing Liu 2023-08-02 17:19:21 -04:00 • committed by Alex Deucher
commit 9e0530257e