[HID] Fixed some issues with controller/passthrough visibility.

- Moved X_INPUT flags from kernel to HID
- Added ability to return input type from driver

src/xenia/hid/xinput/xinput_input_driver.cc

@@ -239,6 +239,10 @@ X_RESULT XInputInputDriver::GetKeystroke(uint32_t user_index, uint32_t flags,
   return result;
 }
 
+InputType XInputInputDriver::GetInputType() const {
+  return InputType::Controller;
+}
+
 }  // namespace xinput
 }  // namespace hid
 }  // namespace xe

src/xenia/hid/xinput/xinput_input_driver.h

@@ -29,6 +29,7 @@ class XInputInputDriver final : public InputDriver {
   X_RESULT SetState(uint32_t user_index, X_INPUT_VIBRATION* vibration) override;
   X_RESULT GetKeystroke(uint32_t user_index, uint32_t flags,
                         X_INPUT_KEYSTROKE* out_keystroke) override;
+  virtual InputType GetInputType() const override;
 
  private:
   void* module_;