When OS package is not provided driver silently goes into safe mode,
since safe mode is missing most of advanced features, this may confuse
the users.
Instead of going into safe mode silently, add devarg for safe mode
enabling only for users that are asking for it.
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Qiming Yang <qiming.yang@intel.com>
Acked-by: Ray Kinsella <ray.kinsella@intel.com>
603beeb970