spi: pxa2xx: Use proper SSP header in soc/pxa/ssp.c

There is nothing from pxa2xx_spi.h used by soc/pxa/ssp.c.
Replace it with pxa2xx_ssp.h.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://msgid.link/r/20240307195056.4059864-4-andriy.shevchenko@linux.intel.com


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