Add device tree bindings for RTD1315E.
Signed-off-by: Tzuyi Chang <tychang@realtek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230919101117.4097-6-tychang@realtek.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>