ASoC: dt-bindings: fsl,ssi: Convert to YAML

ASoC: dt-bindings: fsl,ssi: Convert to YAML

Convert the fsl,ssi binding to YAML.

Add below compatible strings which were not listed
in document:

fsl,imx50-ssi
fsl,imx53-ssi
fsl,imx25-ssi
fsl,imx27-ssi
fsl,imx6q-ssi
fsl,imx6sl-ssi
fsl,imx6sx-ssi

Add below fsl,mode strings which were not listed.

i2s-slave
i2s-master
lj-slave
lj-master
rj-slave
rj-master

Add 'ac97-gpios' property which were not listed.
Then dtbs_check can pass.

And remove the 'codec' description which should be
in the 'codec' binding doc.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/1714026906-16723-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>