u-boot: Upgrade AST2400 machines to 2016.05 tree.

Move 2016.05 tree to point at the latest openbmc commit and point
all AST2400 machines to it.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
1 file changed
tree: d8c13770d1cd89aa5dcf5444eee715caa38687f3
  1. conf/
  2. meta-barreleye/