drm/amd/display: Fix HDCP SEND AKI INIT error

[why]
HDCP sends AKI INIT error in case of multiple display on dock

[how]
Add new checks and method to handle display adjustment
for multiple display cases

Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ahmad Othman <ahmad.othman@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>