* also handle dp aux on PCH. * tested on Gen7, should work from Gen6. Change-Id: I8d99bcdc10c817e66441a6a644df490dd988a74d Reviewed-on: https://review.haiku-os.org/c/haiku/+/5290 Tested-by: Commit checker robot <[email protected]> Reviewed-by: Jérôme Duval <[email protected]>