spi: pxa2xx-pci: Drop temporary storage use for a handful of members

Instead of using temporary storage, assign the values directly
to the corresponding struct pxa2xx_spi_controller members.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220225172350.69797-10-andriy.shevchenko@linux.intel.com


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