drivers: spi: add mspm0 driver#5

hansbinderup wants to merge 8 commits intomsp-ti:mspm0_upstreammsp-ti/zephyr:mspm0_upstreamfrom

AudioStreamingPlatform:drivers/spi/add-spi_mspm0-driverAudioStreamingPlatform/zephyr:drivers/spi/add-spi_mspm0-driverCopy head branch name to clipboard