arm64: dts: rockchip: disable I2C2 bus by default on RK3588 Tiger

arm64: dts: rockchip: disable I2C2 bus by default on RK3588 Tiger

RK3588 Tiger routes I2C2 signals to the Q7 Camera FFC connector (P2) but
nothing on the SoM itself is on that bus, therefore it'll be up to the
adapter connected to the Q7 Camera FFC connector (P2) to enable the I2C2
controller, if need be.

Thus, disable it by default.

Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
Link: https://lore.kernel.org/r/20250218-tsd-align-haikou-v1-9-5c44d1dd8658@cherry.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>