This adds kernel packages for the Vitesse VSC73XX switches. I have split the switch into explicit SPI and platform integrated variants as it's quite a bit of code. Link: https://patchwork.ozlabs.org/project/openwrt/patch/20250410-gemini-rtl-dsa-module-v1-1-60af8219b2cc@linaro.org/ Signed-off-by: Linus Walleij <linus.walleij@linaro.org>