Revert "drm/amd/display: Fix DCN3 B0 DP Alt Mapping"

Revert "drm/amd/display: Fix DCN3 B0 DP Alt Mapping"

This reverts commit df180f21a567d086929cbc142c622468186bbc63.

Commit df180f21a567 ("drm/amd/display: Fix DCN3 B0 DP Alt Mapping")
is causing 2nd USB-C display not lighting up.
Phy id remapping is done differently than is assumed in this
patch.

Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>