Switch manifest to stabilized kernel build tools

The 'master-kernel-build-2021' branch is a pinned version of the master
branch that is not receiving any new features and is therefore to be
used for non-development branches.

Signed-off-by: Matthias Maennich <maennich@google.com>
Change-Id: I17d713265be5661c6bdd20ed0656fe1263cd8ada
1 file changed
tree: 9e0c90fc331ebcd53f87aeb1f0e515938f9caaf5
  1. default.xml