Change MAV_CMD_DO_LAND_START to standaloneCoordinate

src/MissionManager/MavCmdInfoCommon.json

@@ -542,8 +542,19 @@
             "friendlyName":         "Land start",
             "description":          "Marker to indicate start of landing sequence.",
             "specifiesCoordinate":  true,
+            "standaloneCoordinate": true,
             "friendlyEdit":         true,
-            "category":             "Basic"
+            "category":             "Basic",
+            "param5": {
+                "label":            "Lat:",
+                "default":          0,
+                "decimalPlaces":    7
+            },
+            "param6": {
+                "label":            "Lon:",
+                "default":          0,
+                "decimalPlaces":    7
+            }
         },
         { "id": 190, "rawName": "MAV_CMD_DO_RALLY_LAND", "friendlyName": "MAV_CMD_DO_RALLY_LAND" },
         { "id": 191, "rawName": "MAV_CMD_DO_GO_AROUND", "friendlyName": "MAV_CMD_DO_GO_AROUND" },