[Why&How] Add a dedicated AMDGPU specific ID for use with
newer ASICs that support USB-C output
Signed-off-by: NAurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>