Adding some constants lookup strings
Implement STOP_REQ
Implement SIGNAL_BTAMP_EVENT_REQ
Implement CONFIGURE_RXP_FILTER_REQ
Implement ADD/DEL_WOWL_BCAST_PTRN
Implement ENTER/EXIT_WOWL_REQ
Implement GET_ROAM_RSSI_REQ/RSP
Remove duplicate protofield entries for rsp_status

To ease searching for command response status only one rsp_status
should be defined. Some commands defined their own status protofield
so removed them.