uboot-imx

i2c: lpc32xx: Rename probe function

This is part of the prep work for the migration to the driver model.
What used to be the probe function is now called probe_chip.

Signed-off-by: Liam Beguin <lbeguin@tycoint.com>
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>