gmmlib: Uprev to 20.1.1.

This CL uprevs gmmlib to the upstream release. cros_portage_upgrade
--unstable-ok is used to perform a pristine upgrade on portage-stable
and then the media-libs/gmmlib folder is copied to chromiumos-overlay.

After that, the following changes are made:

- We remove 9999 stuff from the ebuild because we don't expect to use
  cros_workon with this package.

- We remove commented code from upstream.

- We remove the multilib_src_configure() definition since it's
  essentially the same as the one in the eclass.

See the diff since PS1 for these changes.

BUG=b:159825228
TEST=emerge-eve media-libs/gmmlib

Cq-Depend: chromium:2270741
Change-Id: I40ee1f71e13e1a2281a494038f83387f91e36563
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2269971
Tested-by: Andres Calderon Jaramillo <andrescj@chromium.org>
Commit-Queue: Andres Calderon Jaramillo <andrescj@chromium.org>
Reviewed-by: Miguel Casas <mcasas@chromium.org>
6 files changed