dt-bindings: i2c: i2c-mtk: add support for MT8516

Add binding documentation of i2c-mtk for MT8516 SoC.
Signed-off-by: NFabien Parent <fparent@baylibre.com>
Acked-by: NRob Herring <robh@kernel.org>
Acked-by: NMatthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Documentation/devicetree/bindings/i2c/i2c-mtk.txt

@@ -13,6 +13,7 @@ Required properties:
       "mediatek,mt7629-i2c", "mediatek,mt2712-i2c": for MediaTek MT7629
       "mediatek,mt8173-i2c": for MediaTek MT8173
       "mediatek,mt8183-i2c": for MediaTek MT8183
+      "mediatek,mt8516-i2c", "mediatek,mt2712-i2c": for MediaTek MT8516
   - reg: physical base address of the controller and dma base, length of memory
     mapped region.
   - interrupts: interrupt number to the cpu.