This patch adds I2C mux support for the fsl_i2c driver. This
allows you to add "new" i2c busses, which are reached over
i2c muxes. For more infos, please look in the README and
search for CONFIG_I2C_MUX.
Signed-off-by: NHeiko Schocher <hs@denx.de>
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>