skylake: use native gpio configuration for uart

Instead of open coding the UART2 gpio configuration use
the support library.

BUG=chrome-os-partner:42982
BRANCH=None
TEST=Built and booted glados.

Original-Change-Id: I9637cb995d51b67eb320650d92f8518de0280dca
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/289801
Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

Change-Id: I7f0e6599df983323f773f1ec6600537c20c15b11
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11176
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed