arm64: dts: ti: k3-am654-base-board: Add I2C nodes

Add DT entries for I2C instances present in AM654 SoC.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>