drivers: spi: Add MAX32690 SPI driver

Add SPI driver for Analog Devices MAX32690 MCU. Supports interrupt-based
transfers.

Co-Authored-By: Mert Vatansever <mert.vatansever@analog.com>
Co-Authored-By: Sadik Ozer <sadik.ozer@analog.com>
Co-Authored-By: Rob Cornall <rob.cornall@analog.com>
Signed-off-by: Tahsin Mutlugun <Tahsin.Mutlugun@analog.com>