dt-bindings: i2c: i2c-mt65xx: Add compatible for MT6795 Helio X10

The MT6795 SoC uses the same I2C controller parameters as MT8173:
add a new compatible string for it.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>