spi: pxa2xx: Consistently use dev variable in pxa2xx_spi_init_pdata()

We have a temporary variable to keep a pointer to a struct device in
the pxa2xx_spi_init_pdata(). Use it consistently there.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20221020194500.10225-5-andriy.shevchenko@linux.intel.com


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