intel_extreme: added more pipeC support, fixes for eDP on DDI systems

intel_extreme: skylake/DDI. all displays can set resolution now, no refresh on digital panels yet (DPLL still missing)

intel_extreme: skylake/DDI improvements. no resolution changing possible yet (missing DPLL code yet)

intel_extreme: reduce use of display_mode where display_timing is enough

In most cases we don't need to use the complete display_mode struct and
we just need the timings. This will avoid future confusion between the
virtual width/height and the actual display timings, if we implement
scrolling someday.

Change-Id: I6c4430b84130b956a47ea0a01afb0843f5a34fd2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4665
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

intel driver: added panelfitter pgmming.

intel_extreme: fix C++ syntax.

Thanks to tqh and cpcheck for finding this.

intel_extreme: tracing cleanup; no functional change

intel_extreme: Rebase and refactor mmlr's work from 2013

* New port storage classes and cleaner logic