PlayStationMouse: Fix X sensitivity being used for Y

Yay copy-paste fails.

src/core/negcon_rumble.cpp

@@ -63,6 +63,7 @@ void NeGconRumble::Reset()
 
   if (m_force_analog_on_reset)
   {
+    // NOTE: Should be NeGconRumble, but we don't want to break it for games that haven't opted in.
     if (CanStartInAnalogMode(ControllerType::AnalogController))
       SetAnalogMode(true, false);
   }

src/core/playstation_mouse.cpp

@@ -167,7 +167,7 @@ bool PlayStationMouse::Transfer(const u8 data_in, u8* data_out)
     case TransferState::DeltaY:
     {
       const float delta_y = std::floor(m_delta_y * m_sensitivity_y);
-      m_delta_y -= delta_y / m_sensitivity_x;
+      m_delta_y -= delta_y / m_sensitivity_y;
       *data_out = static_cast<s8>(std::clamp(delta_y, static_cast<float>(std::numeric_limits<s8>::min()),
                                              static_cast<float>(std::numeric_limits<s8>::max())));
       m_transfer_state = TransferState::Idle;