The QEMU board's post-image script will glob through various
`readme.txt` files for an appropriate command line to use. Recent linter
changes [1] prevents this from happening, and results in the following
build error:
>>> Executing post-image script board/qemu/post-image.sh
sed: can't read board/qemu/*/readme.txt: No such file or directory
Reverting part of the shellcheck fixes for the README file arguments and
marking a linter exception.
[1]: b32d7c99c6
Signed-off-by: James Knight <james.d.knight@live.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
[yann.morin.1998@free.fr: also reinstate plural to the variable name]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>