The environment script used an annoying mix of tabs and spaces and no
mapping of tabs to spaces would produce pleasant indentation. Reformat
to eliminate tab characters and settle on 4 spaces for indentation
(which matches the upstream icecream script from which this is derived)
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>