APMrover2: use hal.util soft_armed state

APMrover2/APMrover2.pde

@@ -583,7 +583,7 @@ void loop()
 // update AHRS system
 static void ahrs_update()
 {
-    ahrs.set_armed(hal.util->safety_switch_state() != AP_HAL::Util::SAFETY_DISARMED);
+    hal.util->set_soft_armed(hal.util->safety_switch_state() != AP_HAL::Util::SAFETY_DISARMED);
 
 #if HIL_MODE != HIL_MODE_DISABLED
     // update hil before AHRS update

APMrover2/GCS_Mavlink.pde

@@ -75,7 +75,7 @@ static NOINLINE void send_heartbeat(mavlink_channel_t chan)
 #endif
 
     // we are armed if we are not initialising
-    if (control_mode != INITIALISING && ahrs.get_armed()) {
+    if (control_mode != INITIALISING && hal.util->get_soft_armed()) {
         base_mode |= MAV_MODE_FLAG_SAFETY_ARMED;
     }
 

APMrover2/system.pde

@@ -489,7 +489,7 @@ static bool should_log(uint32_t mask)
     if (!(mask & g.log_bitmask) || in_mavlink_delay) {
         return false;
     }
-    bool ret = ahrs.get_armed() || (g.log_bitmask & MASK_LOG_WHEN_DISARMED) != 0;
+    bool ret = hal.util->get_soft_armed() || (g.log_bitmask & MASK_LOG_WHEN_DISARMED) != 0;
     if (ret && !DataFlash.logging_started() && !in_log_download) {
         // we have to set in_mavlink_delay to prevent logging while
         // writing headers