4a3ad932b2
[Why/How] We need to handle cable capabilities for cables that support cable ID. The cable attributes are intersected with the verified link caps to determine appropriate max link rate. After determining cable attributes we update the DP receiver. Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: George Shen <George.Shen@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>