embObjMotionControl: new params and better check

- imported parsing of params "limPwm" and pid "kff" from canBusMotionControl
- using function to check for param and param size, with error message (previously
   size check was missing and errors were silent)
canBusMotionControl: fix 2 bugs, better check on input params

- fix misplaced return true
- fix index error in parsing damping
- using function to check for param and param size (for nre formats) and
    printing error if something is wrong