[U-Boot] ls1021atwr: Convert to use driver model TSEC driver

Hi York,

There was a patch [1] previously done by me to convert to use driver model TSEC driver on LS1021ATWR. It was never accepted given at that time the PCI driver for LS1021A has not been converted to use driver model yet, and DM PCI is unfortunately bundled to DM ETH.

Now that we have converted to use DM PCI, would it possible for NXP guys to pick up this work and do the DM ETH conversion for LS1021ATWR? Thanks!

[1] http://patchwork.ozlabs.org/patch/566347/

Regards, Bin