[ Upstream commitfb2c3f72e8] Do not allow any other properties in connector child, except what usb-connector.yaml evaluates. Fixes:9729cad027("dt-bindings: extcon: maxim,max77843: Add MAX77843 bindings") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sasha Levin <sashal@kernel.org>