Aerofc: px4fmu_common: Only set AUTOSTART to 4070 if nothing was set

This way user can set aftwards any other AUTOSTART value and it will
not be overwritten.
Also move the block up and set SYS_AUTOCONFIG, this way if air frame
configuration was reset in ground station it will wipe the parameters
before load new ones.

ROMFS/px4fmu_common/init.d/rcS

@@ -99,6 +99,15 @@ then
 	#then
 	#fi
 
+	if ver hwcmp AEROFC_V1
+	then
+		if param compare SYS_AUTOSTART 0
+		then
+			param set SYS_AUTOCONFIG 1
+			param set SYS_AUTOSTART 4070
+		fi
+	fi
+
 	#
 	# Set AUTOCNF flag to use it in AUTOSTART scripts
 	#
@@ -185,15 +194,6 @@ then
 		set USE_IO no
 	fi
 
-	if ver hwcmp AEROFC_V1
-	then
-		if param compare SYS_AUTOSTART 0
-		then
-			set AUTOCNF yes
-		fi
-		param set SYS_AUTOSTART 4070
-	fi
-
 	#
 	# Set parameters and env variables for selected AUTOSTART
 	#