Add MediaTek MT6370 flashlight binding documentation.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Alice Chen <alice_chen@richtek.com>
Signed-off-by: ChiaEn Wu <chiaen_wu@richtek.com>
Link: https://lore.kernel.org/r/5632ef04d7807f78259e4e9f3d952849a839a50c.1663926551.git.chiaen_wu@richtek.comSigned-off-by: Rob Herring <robh@kernel.org>