This patch implements the spdif out driver for ST peripheral. This
peripheral implements IEC60958 standard
Signed-off-by: NVipin Kumar <vipin.kumar@st.com>
Signed-off-by: NRajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>