linux-yocto/6.4: aufs6 integration

linux-yocto/6.4: aufs6 integration

We still offer aufs support for some container / virtualization
workloads. The project is still up to date with 6.3+, so we grab
the patches and make them available on v6.4/standard/*

As usual, v6.4/base is pure k.org + -stable if you don't want
things such as aufs.

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>