If runqemu fails, there is some logic to run a set of commands to dump
various bits of information that might help debug the issue
(particularly in a busy situation such as on the autobuilder). One of
those commands is "top -bn1", however top restricts the output to the
width of the calling terminal, and for whatever reason this is a little
restrictive when called from inside testimage, so set COLUMNS in the
environment to a high value to fix it. (Another way is to use the -w
option, but that is not supported by our default busybox configuration
so it will then fail when this same list of commands is used on the
target).
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
