uboot-phytec

i2c: cdns: Convert to livetree function

Update cadence i2c driver to support livetree
Similar changes were done by:
"net: zynq_gem: convert to use livetree"
(sha1: 26026e695afa794ac018a09e79a48120d322b60d)

Signed-off-by: Michal Simek <michal.simek@xilinx.com>