Added support for the Astro C40 in Xbox 360 mode

src/joystick/hidapi/SDL_hidapi_xbox360.c

@@ -63,6 +63,10 @@ static SDL_bool HIDAPI_DriverXbox360_IsSupportedDevice(SDL_HIDAPI_Device *device
 {
     const int XB360W_IFACE_PROTOCOL = 129; /* Wireless */
 
+    if (vendor_id == USB_VENDOR_ASTRO && product_id == USB_PRODUCT_ASTRO_C40_XBOX360) {
+        /* This is the ASTRO C40 in Xbox 360 mode */
+        return SDL_TRUE;
+    }
     if (vendor_id == USB_VENDOR_NVIDIA) {
         /* This is the NVIDIA Shield controller which doesn't talk Xbox controller protocol */
         return SDL_FALSE;

src/joystick/hidapi/SDL_hidapijoystick.c

@@ -242,6 +242,7 @@ static SDL_GamepadType SDL_GetJoystickGameControllerProtocol(const char *name, U
             0x24c6, /* PowerA */
             0x2c22, /* Qanba */
             0x2dc8, /* 8BitDo */
+            0x9886, /* ASTRO Gaming */
         };
 
         int i;