Compatibles can come in two formats. Either "vendor,ip-soc" or "vendor,soc-ip". Add a DT schema documenting preferred policy and enforcing it for all new compatibles, except few existing patterns. The schema also disallows wild-cards used in SoC compatibles. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220705161340.493474-1-krzysztof.kozlowski@linaro.org