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>