Merge tag 'u-boot-atmel-fixes-2019.10-a' of https://gitlab.denx.de/u-boot/custodians...

First set of u-boot-atmel fixes for 2019.10 cycle:

This includes only tiny cleanups on env changes related to 2019.10 new
features: removal of duplicate env settings (otherwise there may be
warnings in building..) and a small fix for flashes on Gardena smart
gateway (requires nand bad block tables).