libX11, xorg-proto: upgraded packages to upstream

Upgraded x11-base/xorg-proto to version 2020.1 on amd64
Upgraded x11-libs/libX11 to version 1.6.11 on amd64

BUG=chromium:1115945
TEST=build_packages

Change-Id: Ie91a2b2b71b9c6381a5b1b407dad254aea48ccb4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2364995
Tested-by: David Riley <davidriley@chromium.org>
Commit-Queue: David Riley <davidriley@chromium.org>
Auto-Submit: David Riley <davidriley@chromium.org>
Reviewed-by: Fergus Dall <sidereal@google.com>
13 files changed