staging: wfx: allow new PDS format

staging: wfx: allow new PDS format

The device needs data about the antenna configuration. This information
in provided by PDS (Platform Data Set, this is the wording used in WF200
documentation) files.

Until now, the driver had to parse the PDS file before to send it. This
solution was not acceptable for the vanilla kernel. We have slightly
changed the PDS format so it is now an array of Type-Length-Value.

This patch allows to support new format and keep compatibility with
legacy format.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
probe: allow new PDS format
Link: https://lore.kernel.org/r/20220211162659.528333-2-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>