spi: pxa2xx: Respect Intel SSP type given by a property

Allow to set the Intel SSP type by reading the property.
Only apply this to the known MFD enumerated LPSS devices.

The check is done by the looking for the specifically
named IO memory resource provided by upper layer. This
won't be an issue in the future because we strictly
prioritize the order in which we are looking for the SSP
type in the code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221021190018.63646-3-andriy.shevchenko@linux.intel.com


Signed-off-by: Mark Brown <broonie@kernel.org>