[U-Boot] U-Boot 2015 and u-boot-fw-utils 2017.09

[Diaz de Grenu, Jose]

Hi,

I am using U-Boot 2015.04, and the new root file system for my platform includes u-boot-fw-utils 2017.09. I have noticed that fw_{print,set}env utilities are no longer working. 

Should these be compatible and work properly? Or are there any changes regarding how the environment is read and written between v2015.04 and v2017.09 that would explain this incompatility?

Thanks