This patch add audio related definitions and functions
Signed-off-by: NArnaud Patard <apatard@mandriva.com>
Acked-by: NNicolas Pitre <nico@fluxnic.net>
Acked-by: NLiam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>