Add support for Cirrus Logic CS530x DAC and CODEC

Merge series from Vitaly Rodionov <vitalyr@opensource.cirrus.com>:

This patch series introduces DAC, CODEC, and SPI control bus support
for Cirrus Logic CS530x variants, along with general code cleanup
and resolution of checkpatch.pl warnings.

Changes since v1,v2,v3:

- Signed off all patches
- Splitted "tidy up" pach in 3 separate simple patches
- Fixed commit subject to much preferred subject prefix for binding patches.
- Moved dt-bindings related patch down the chain
- Added all relevant maintainers to CC list

Simon Trimmer (4):
  ASoC: cs530x: Correct log message with expected variable
  ASoC: cs530x: Add CODEC and DAC support
  ASoC: cs530x: Check the DEVID matches the devtype
  ASoC: cs530x: Rename i2c related structures

Vitaly Rodionov (7):
  ASoC: cs530x: Update the copyright headers
  ASoC: cs530x: Sort #include directives and tidy up whitespaces
  ASoC: cs530x: Remove unused struct members and constants
  ASoC: cs530x: Correct constant naming
  ASoC: dt-bindings: sound: cirrus: cs530x: Add cs530x variants
  ASoC: cs530x: Correct MCLK reference frequency values
  ASoC: cs530x: Add SPI bus support for cs530x parts

 .../bindings/sound/cirrus,cs530x.yaml         |   4 +
 sound/soc/codecs/Kconfig                      |  10 +
 sound/soc/codecs/Makefile                     |   2 +
 sound/soc/codecs/cs530x-i2c.c                 |  24 +-
 sound/soc/codecs/cs530x-spi.c                 |  92 ++++
 sound/soc/codecs/cs530x.c                     | 516 +++++++++++++++---
 sound/soc/codecs/cs530x.h                     | 120 ++--
 7 files changed, 634 insertions(+), 134 deletions(-)
 create mode 100644 sound/soc/codecs/cs530x-spi.c

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2.43.0