arm64: dts: mediatek: mt8192: fix i2c node names

Fix the i2c node names to be compliant to the YAML schema. The
I2C node name should match the following pattern: "^i2c@[0-9a-f]+$".

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Link: https://lore.kernel.org/r/20211110194959.20611-4-fparent@baylibre.com


Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>