this needed for dp aux before skylake, only for DP A (eDP). should help with #17771 Change-Id: I4bdcca1fdc05294fb5b56c5c96164b6936a5881e Reviewed-on: https://review.haiku-os.org/c/haiku/+/5355 Tested-by: Commit checker robot <[email protected]> Reviewed-by: Adrien Destugues <[email protected]>