samus/beltino/panther: Remove LYNXPOINT_NO_EHCI driver

These boards enable XHCI mode in coreboot so they should not
send the SMI again to try and route ports to XHCI again.

BUG=chrome-os-partner:23752
BRANCH=none
TEST=emerge-samus depthcharge

Change-Id: I9079cddb14ba935f13ec04f86ab046b1229dd3dd
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/180680
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
3 files changed