iio: pressure: mprls0025pa add SPI driver

Add SPI component of the driver.

Tested-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Link: https://lore.kernel.org/r/20231229092445.30180-11-petre.rodan@subdimension.ro


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>