cx231xx_i2c_register
errCode = cx231xx_i2c_register(&dev->i2c_bus[0]);
errCode = cx231xx_i2c_register(&dev->i2c_bus[1]);
errCode = cx231xx_i2c_register(&dev->i2c_bus[2]);
int cx231xx_i2c_register(struct cx231xx_i2c *bus);