Fixed the NVIDIA SHIELD Controller showing up twice on macOS

Fixes https://github.com/libsdl-org/SDL/issues/14911

src/joystick/apple/SDL_mfijoystick.m

@@ -162,6 +162,13 @@ static bool IsControllerSwitchJoyConPair(GCController *controller)
     }
     return false;
 }
+static bool IsControllerNVIDIASHIELD(GCController *controller)
+{
+    if ([controller.vendorName hasPrefix:@"NVIDIA Controller"]) {
+        return true;
+    }
+    return false;
+}
 static bool IsControllerStadia(GCController *controller)
 {
     if ([controller.vendorName hasPrefix:@"Stadia"]) {
@@ -343,6 +350,7 @@ static bool IOS_AddMFIJoystickDevice(SDL_JoystickDeviceItem *device, GCControlle
     device->is_ps5 = IsControllerPS5(controller);
     device->is_switch_pro = IsControllerSwitchPro(controller);
     device->is_switch_joycon_pair = IsControllerSwitchJoyConPair(controller);
+    device->is_shield = IsControllerNVIDIASHIELD(controller);
     device->is_stadia = IsControllerStadia(controller);
     device->is_backbone_one = IsControllerBackboneOne(controller);
     device->is_switch_joyconL = IsControllerSwitchJoyConL(controller);
@@ -354,6 +362,7 @@ static bool IOS_AddMFIJoystickDevice(SDL_JoystickDeviceItem *device, GCControlle
         (device->is_ps5 && HIDAPI_IsDeviceTypePresent(SDL_GAMEPAD_TYPE_PS5)) ||
         (device->is_switch_pro && HIDAPI_IsDeviceTypePresent(SDL_GAMEPAD_TYPE_NINTENDO_SWITCH_PRO)) ||
         (device->is_switch_joycon_pair && HIDAPI_IsDevicePresent(USB_VENDOR_NINTENDO, USB_PRODUCT_NINTENDO_SWITCH_JOYCON_PAIR, 0, "")) ||
+        (device->is_shield && HIDAPI_IsDevicePresent(USB_VENDOR_NVIDIA, USB_PRODUCT_NVIDIA_SHIELD_CONTROLLER_V104, 0, "")) ||
         (device->is_stadia && HIDAPI_IsDevicePresent(USB_VENDOR_GOOGLE, USB_PRODUCT_GOOGLE_STADIA_CONTROLLER, 0, "")) ||
         (device->is_switch_joyconL && HIDAPI_IsDevicePresent(USB_VENDOR_NINTENDO, USB_PRODUCT_NINTENDO_SWITCH_JOYCON_LEFT, 0, "")) ||
         (device->is_switch_joyconR && HIDAPI_IsDevicePresent(USB_VENDOR_NINTENDO, USB_PRODUCT_NINTENDO_SWITCH_JOYCON_RIGHT, 0, "")) ||
@@ -492,7 +501,7 @@ static bool IOS_AddMFIJoystickDevice(SDL_JoystickDeviceItem *device, GCControlle
         subtype = 4;
 
 #ifdef DEBUG_CONTROLLER_PROFILE
-        NSLog(@"Elements used:\n", controller.vendorName);
+        NSLog(@"Elements used:\n");
         for (id key in device->buttons) {
             NSLog(@"\tButton: %@ (%s)\n", key, elements[key].analog ? "analog" : "digital");
         }

src/joystick/apple/SDL_mfijoystick_c.h

@@ -53,6 +53,7 @@ typedef struct joystick_hwdata
     bool is_switch_joycon_pair;
     bool is_switch_joyconL;
     bool is_switch_joyconR;
+    bool is_shield;
     bool is_stadia;
     bool is_backbone_one;
     int is_siri_remote;