dt-bindings: vendor-prefixes: add Inanbo

Shenzhen INANBO Electronic Technology Co., Ltd. manufacturers TFT/OLED
LCD panels.

Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-2-sre@kernel.org