fstrim: add --quiet option to suppress error messages

fstrim: add --quiet option to suppress error messages

When fstrim interacts with NTFS it result can be error reporting bad file
descriptor.  That seems to be a bug in NTFS.  While waiting driver to get on
top of the issue and be commonly available lets add to fstrim option to make
it be more silent about errno 9 aka EBADF, Bad file descriptor.

Reported-by: https://github.com/moviuro
Proposed-by: Dave Reisner <dreisner@archlinux.org>
Reference: https://bugs.archlinux.org/task/62288
Addresses: https://github.com/karelzak/util-linux/issues/789
Signed-off-by: Sami Kerola <kerolasa@iki.fi>