GPU: Add GPU::GetFullDisplayResolution()

src/core/gpu.cpp

@@ -76,11 +76,16 @@ void GPU::CPUClockChanged()
 
 void GPU::UpdateResolutionScale() {}
 
-std::tuple<u32, u32> GPU::GetEffectiveDisplayResolution()
+std::tuple<u32, u32> GPU::GetEffectiveDisplayResolution(bool scaled /* = true */)
 {
   return std::tie(m_crtc_state.display_vram_width, m_crtc_state.display_vram_height);
 }
 
+std::tuple<u32, u32> GPU::GetFullDisplayResolution(bool scaled /* = true */)
+{
+  return std::tie(m_crtc_state.display_width, m_crtc_state.display_height);
+}
+
 void GPU::Reset(bool clear_vram)
 {
   SoftReset();