recipetool: create: fix do_install handling for makefile-only software
In my testing here it appears make -qn returns an error (exit code 2)
whereas make -n doesn't; I can't immediately tell why based on the
documentation. We don't actually care for it to be quiet since we're
capturing the output, so let's just leave -q off and have this work
properly as a result.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
