dt-bindings: i2c: Document I2C controller binding for MT6797 SoC

I2C controller driver for MT6577 SoC is reused for MT6797 SoC. Hence,
document that in DT binding.

Signed-off-by: Manivannan Sadhasivam <[email protected]>
Acked-by: Rob Herring <[email protected]>
Acked-by: Wolfram Sang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Matthias Brugger <[email protected]>

Author: Mani-Sadhasivam

Documentation/devicetree/bindings/i2c/i2c-mt65xx.txt

@@ -8,6 +8,7 @@ Required properties:
       "mediatek,mt2712-i2c": for MediaTek MT2712
       "mediatek,mt6577-i2c": for MediaTek MT6577
       "mediatek,mt6589-i2c": for MediaTek MT6589
+      "mediatek,mt6797-i2c", "mediatek,mt6577-i2c": for MediaTek MT6797
       "mediatek,mt7622-i2c": for MediaTek MT7622
       "mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for MediaTek MT7623
       "mediatek,mt7629-i2c", "mediatek,mt2712-i2c": for MediaTek MT7629