Audio HAL: Add missing device to XSD

The XSD has to be kept manually synced to the HAL definition. When some
formats were introduced and the corresponding enum values were added in
the HAL .hal, the XSD was not updated.

Test: xmllint --noout --schema hardware/interfaces/audio/4.0/config/audio_policy_configuration.xsd  --xinclude out/target/product/*/vendor/etc/audio_policy_configuration.xml
Bug: 128967080
Change-Id: I832398f325d4de18e0deb644f11060fe27d9bdb5
Signed-off-by: Kevin Rocard <krocard@google.com>