ASoC: stm32: fix dtbs_check warnings
Merge series from Olivier Moysan <olivier.moysan@foss.st.com>:
Fix dtbs_check warnings in STM32MP15 DK boards Devices Trees for
STM32 I2S and Cirrus CS42L51 codec.
- Add OF graph port property in I2S and CS42L51 DT bindings.
Fixes warnings:
audio-controller@
4000b000: Unevaluated properties are not allowed
('port' was unexpected)
cs42l51@4a: Unevaluated properties are not allowed
('port' was unexpected)
- Correct OF graph DAI audio format property for STM32MP15x Dkx I2S node