APMRover2: unhide default NAVL1_PERIOD with a define

set the correct value to param

APMrover2/Parameters.cpp

@@ -621,5 +621,5 @@ void Rover::load_parameters(void)
     cliSerial->printf("load_all took %luus\n", micros() - before);
     
     // set a more reasonable default NAVL1_PERIOD for rovers
-    L1_controller.set_default_period(8);
+    L1_controller.set_default_period(NAVL1_PERIOD);
 }

APMrover2/config.h

@@ -182,6 +182,13 @@
   #define CAMERA ENABLED
 #endif
 
+//////////////////////////////////////////////////////////////////////////////
+// NAVL1
+//
+#ifndef NAVL1
+  #define NAVL1_PERIOD    8
+#endif
+
 //////////////////////////////////////////////////////////////////////////////
 // AIRSPEED_CRUISE
 //

Tools/autotest/default_params/rover-skid.parm

@@ -27,7 +27,7 @@ MODE5        2
 MODE6        0
 STEER2SRV_P     1.8
 SIM_GPS_DELAY 1
-NAVL1_PERIOD 6
+NAVL1_PERIOD 8
 # we need small INS_ACC offsets so INS is recognised as being calibrated
 INS_ACCOFFS_X   0.001
 INS_ACCOFFS_Y   0.001

Tools/autotest/default_params/rover.parm

@@ -21,7 +21,7 @@ MODE5        2
 MODE6        0
 STEER2SRV_P     1.8
 SIM_GPS_DELAY 1
-NAVL1_PERIOD 6
+NAVL1_PERIOD 8
 # we need small INS_ACC offsets so INS is recognised as being calibrated
 INS_ACCOFFS_X   0.001
 INS_ACCOFFS_Y   0.001