Fix parameter name for initial setup parameter config

ROMFS/px4fmu_common/init.d/rc.fw_defaults

@@ -10,7 +10,7 @@ then
 	param set NAV_LAND_ALT 90
 	param set NAV_RTL_ALT 100
 	param set NAV_RTL_LAND_T -1
-	param set NAV_ACCEPT_RAD 50
+	param set NAV_ACC_RAD 50
 	param set FW_T_HRATE_P 0.01
 	param set FW_T_RLL2THR 15
 	param set FW_T_SRATE_P 0.01

ROMFS/px4fmu_common/init.d/rc.mc_defaults

@@ -41,7 +41,9 @@ then
 	param set PE_POSNE_NOISE 0.5
 	param set PE_POSD_NOISE 1.0
 
-	param set NAV_ACCEPT_RAD 2.0
+	param set NAV_ACC_RAD 2.0
+	param set RTL_RETURN_ALT 30.0
+	param set RTL_DESCEND_ALT 10.0
 fi
 
 set PWM_RATE 400