drm/amd/display: add cable ID support for usb c connector

drm/amd/display: add cable ID support for usb c connector

[how]
Call to DMUB to retrieve usb c cable ID data from PD firmware.
If cable id is retrieved from DMUB, skip reading cable ID from RX.

Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>