[U-Boot] USB DFU support into mailline.

[Sohanpal, Harman]

Hi,

Referring to http://elinux.org/Merge_DFU_support_into_mainline_U-Boot, it 
seems some work is going on for adding USB DFU support in the mainline for 
u-boot. But I could not find any code already in mainline. Is there anyone 
working on getting USB DFU support to mainline?

I am working on USB DFU on AM335x BeagleBone, and I want help get USB DFU to 
mainline.

Thanks,
Harman