ASoC: Implement support for enhanced AIF3 on WM8958

Additional audio routing options are available on the WM8958 audio
interface 3. Add support for these.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2 files changed