ASoC: fsl-asoc-card: add compatibility to use 2 codecs in dai-links

Adapt the driver to work with configurations using two codecs or more.
Modify fsl_asoc_card_probe() to handle use cases where 2 codecs are
given in the device tree.
This will be needed to add support for the SPDIF.

Use cases using one codec will ignore any given codecs other than the
first.

Co-developed-by: Philip-Dylan Gleonec <[email protected]>
Signed-off-by: Philip-Dylan Gleonec <[email protected]>
Signed-off-by: Elinor Montmasson <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: Revalioli