Sub: integrate camera frontend/backend split

ArduSub/Parameters.cpp

@@ -404,9 +404,9 @@ const AP_Param::Info Sub::var_info[] = {
     // variables not in the g class which contain EEPROM saved variables
 
 #if AP_CAMERA_ENABLED
-    // @Group: CAM_
+    // @Group: CAM
     // @Path: ../libraries/AP_Camera/AP_Camera.cpp
-    GOBJECT(camera,           "CAM_", AP_Camera),
+    GOBJECT(camera, "CAM", AP_Camera),
 #endif
 
     // @Group: RELAY_

ArduSub/system.cpp

@@ -103,6 +103,11 @@ void Sub::init_ardupilot()
     camera_mount.set_mode(MAV_MOUNT_MODE_RC_TARGETING);
 #endif
 
+#if AP_CAMERA_ENABLED
+    // initialise camera
+    camera.init();
+#endif
+
 #ifdef USERHOOK_INIT
     USERHOOK_INIT
 #endif