Audio V4: Copy audio_policy_configure.xsd 2.0 to 4.0

That will make it easier to review the changes between 2.0 and 4.0.

Bug: 38184704
Test: none
Change-Id: Icb36a5b6e74ad89fb05dfe3ceee7b7f81801918d
Signed-off-by: Kevin Rocard <krocard@google.com>