An always on configuration of aufs4 crept into the default kernel
configuration blocks.
With this change, aufs-enable.scc can be used to turn on aufs via
a KERNEL_FEATURES entry. We can now have co-existing unionfs solutions
and can update them without breaking builds that haven't opted-in.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
