The Asynchronous Sample Rate Converters on the wm5102/wm5110 have no
mixer attached to their input, but they do allow the input to be
selected from a number of sources via a multiplexer. Currently the
platform assumes the presence of 4 multiplexers and a mixer for each
block.

This patch adds support multiplexed single input blocks into the Arizona
platform.
Signed-off-by: NCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Many Arizona class devices contain ADSP2 cores with a standard method for
hooking them into the audio map. Define standard helpers for this.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Arizona devices support two output system clocks. Provide support for
configuring these via set_sysclk(). Once the clock API is more useful
we should migrate over to that.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Some Arizona chips have a higher frequency for the FLL VCO, support this
in the common code.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Some devices have four input structures rather than three.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Allow the user to select which of the system clocks each AIF is referenced
to and constran the DAI to the set of frequencies which can be generated
from that clock.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The Wolfson Arizona series of audio hub CODECs can share a large amount
of their driver code as the result of a common register map. This patch
adds some of this core support, providing a basis for the initial WM5102
audio driver.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>