dt-bindings: vendor-prefixes: document TeeJet

Document TeeJet vendor prefix (used in am3517_mt_ventoux.dts board).

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230515155747.499371-1-krzysztof.kozlowski@linaro.org


Signed-off-by: Rob Herring <robh@kernel.org>