Sub: Fixup rcin initialization

ArduSub/joystick.cpp

@@ -559,11 +559,11 @@ void Sub::set_neutral_controls()
 {
     int16_t channels[11];
 
-    for (uint8_t i = 0; i < 7; i++) {
+    for (uint8_t i = 0; i < 6; i++) {
         channels[i] = 1500;
     }
 
-    for (uint8_t i = 7; i < 11; i++) {
+    for (uint8_t i = 6; i < 11; i++) {
         channels[i] = 0xffff;
     }
 

ArduSub/radio.cpp

@@ -30,6 +30,11 @@ void Sub::init_rc_in()
     for (int i = 0; i < 6; i++) {
         hal.rcin->set_override(i, 1500);
     }
+
+    hal.rcin->set_override(7, g.cam_tilt_center); // camera tilt channel
+    hal.rcin->set_override(8, 1100); // lights 1 channel
+    hal.rcin->set_override(9, 1100); // lights 2 channel
+    hal.rcin->set_override(10, 1100); // video switch
 #endif
 }