Send joystick added events on portable handheld platforms

The IDs on these drivers are hard-coded as device_index + 1, so that's the ID we will send during initialization.

src/joystick/haiku/SDL_haikujoystick.cc

@@ -76,6 +76,8 @@ extern "C"
                     SDL_joyname[numjoysticks] = SDL_CreateJoystickName(0, 0, NULL, stick_name.String());
                     numjoysticks++;
                     joystick.Close();
+
+                    SDL_PrivateJoystickAdded(numjoysticks);
                 }
             }
         }

src/joystick/n3ds/SDL_sysjoystick.c

@@ -62,6 +62,7 @@ static void UpdateN3DSCStick(Uint64 timestamp, SDL_Joystick *joystick);
 static int N3DS_JoystickInit(void)
 {
     hidInit();
+    SDL_PrivateJoystickAdded(1);
     return 0;
 }
 

src/joystick/ps2/SDL_sysjoystick.c

@@ -122,6 +122,7 @@ static int PS2_JoystickInit(void)
                 info->slot = (uint8_t)slot;
                 info->opened = 1;
                 enabled_pads++;
+                SDL_PrivateJoystickAdded(enabled_pads);
             }
         }
     }

src/joystick/psp/SDL_sysjoystick.c

@@ -93,6 +93,8 @@ static int PSP_JoystickInit(void)
         analog_map[127 - i] = -1 * analog_map[i + 128];
     }
 
+    SDL_PrivateJoystickAdded(1);
+
     return 1;
 }
 

src/joystick/vita/SDL_sysjoystick.c

@@ -124,7 +124,8 @@ static int VITA_JoystickInit(void)
     // after the app has already started.
 
     SDL_numjoysticks = 1;
-    SDL_PrivateJoystickAdded(0);
+    SDL_PrivateJoystickAdded(SDL_numjoysticks);
+
     // How many additional paired controllers are there?
     sceCtrlGetControllerPortInfo(&myPortInfo);
 
@@ -132,8 +133,8 @@ static int VITA_JoystickInit(void)
     // and that is the first one, so start at port 2
     for (i = 2; i <= 4; i++) {
         if (myPortInfo.port[i] != SCE_CTRL_TYPE_UNPAIRED) {
+            ++SDL_numjoysticks;
             SDL_PrivateJoystickAdded(SDL_numjoysticks);
-            SDL_numjoysticks++;
         }
     }
     return SDL_numjoysticks;