Added --quiet option to smart command line.
Without this option smart 1.4.1 turns into interactive mode, i.e.
start asking questions and expecting answers.
Internally within smart, this changes the default UI to one which
just prints to stderr, the naming of the parameter is a little
odd but does what we need.
Signed-off-by: Ed Bartosh <eduard.bartosh@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
