virtual i2c support for PCA9541 i2c demux

Hi,

I'm running linux-2.6.26 on custom 460EX based board.
This platform has PCA9541 i2c demux behind the PCA9548 I2C mux on I2C bus 0.
I'm wondering how can I add the demux to the virtual i2c tree (as far as I know there is no driver for this demux)

Regards,
Vladimir