scripts: fix quiet checkpatch

scripts: fix quiet checkpatch

The commit e13fbc065c7f ("scripts: improve quiet checkpatch")
removed the line "total: 1 errors, 0 warnings, 7 lines checked"
from the quiet report.
Later, commit e7c38f471384 ("scripts: remove useless checkpatch notes")
removed few lines before "total:.*lines checked", so it was not working
well for quiet reporting.

Better to keep the "total:" line in quiet mode and remove the other ones.
That's why the checkpatch.pl option --no-summary is not used anymore
by reverting the commit e13fbc065c7f.

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>