[meta-xilinx] Patching u-boot by adding custom defconfig files

[Jean-François Dagenais]

> On Feb 16, 2018, at 14:37, Giordon Stark <kratsg at gmail.com> wrote:
> 
> Thanks a lot for previous help. I'm wondering how you're supposed to go about adding the header file and defconfig for u-boot to compile from for a custom board.

Because we already maintain a gitlab instance, I find it much simpler to have a company clone of u-uboot-xlnx ( and several other repos) where I can maintain upstream merges with our stuff using a normal git workflow. 

My two cents. Cheers!