arm64: dts: imx8mm-beacon: Change camera I2C address

The DSI to HDMI bridge uses the address currently assigned to
the camera, so change the camera address to the alternative
address of 0x10 in preparation to enable the bridge.

Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>