ASoC: Add codec driver for Cirrus Logic CS48L32 DSP

Merge series from Richard Fitzgerald <rf@opensource.cirrus.com>:

formance low-power audio DSP with analog and
PDM digital inputs and support for low-power always-on voice-trigger
functionality.

This series adds the devicetree bindings and the ASoC codec driver.

diff --cc sound/soc/codecs/Kconfig
Simple merge

diff --cc sound/soc/codecs/Makefile
Simple merge