This commit makes sure boards.cfg is up to date before starting
the build tests.  tools/genboardscfg.py exits immediately printing
"boards.cfg is up to date. Nothing to do." when boards.cfg is
already new.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
 # echo "Remaining arguments:"
 # for arg do echo '--> '"\`$arg'" ; done
 
-if [ ! -r boards.cfg ]; then
-       echo "Could not find boards.cfg"
-       tools/genboardscfg.py || {
-               echo "Failed to generate boards.cfg" >&2
-               exit 1
-       }
-fi
+tools/genboardscfg.py || {
+       echo "Failed to generate boards.cfg" >&2
+       exit 1
+}
 
 FILTER="\$1 !~ /^#/"
 [ "$opt_a" ] && FILTER="${FILTER} && $opt_a"