dt-bindings: nvmem: mtk-efuse: add documentation for MT8516 SoC

Add binding documentation for MT8516 SoCs.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20201127102837.19366-2-srinivas.kandagatla@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>