spi: pxa2xx-pci: Drop unneeded checks in lpss_spi_setup()

All of the LPSS devices are using DMA and set the parameters up,
hence no need to test for that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220225172350.69797-8-andriy.shevchenko@linux.intel.com


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