video_core,yuzu: Move UpdateRescalingInfo call to video_core

This only needs to happen once per game boot, so we can just call it
during CreateGPU and be done with it, avoiding the need to call it in
the frontends.

src/video_core/video_core.cpp

@@ -37,6 +37,8 @@ std::unique_ptr<VideoCore::RendererBase> CreateRenderer(
 namespace VideoCore {
 
 std::unique_ptr<Tegra::GPU> CreateGPU(Core::Frontend::EmuWindow& emu_window, Core::System& system) {
+    Settings::UpdateRescalingInfo();
+
     const auto nvdec_value = Settings::values.nvdec_emulation.GetValue();
     const bool use_nvdec = nvdec_value != Settings::NvdecEmulation::Off;
     const bool use_async = Settings::values.use_asynchronous_gpu_emulation.GetValue();

src/yuzu/configuration/config.cpp

@@ -850,8 +850,6 @@ void Config::ReadRendererValues() {
         ReadBasicSetting(Settings::values.disable_shader_loop_safety_checks);
     }
 
-    Settings::UpdateRescalingInfo();
-
     qt_config->endGroup();
 }
 
@@ -1409,8 +1407,6 @@ void Config::SaveRendererValues() {
         WriteBasicSetting(Settings::values.disable_shader_loop_safety_checks);
     }
 
-    Settings::UpdateRescalingInfo();
-
     qt_config->endGroup();
 }
 

src/yuzu/configuration/configure_graphics.cpp

@@ -247,7 +247,6 @@ void ConfigureGraphics::ApplyConfiguration() {
             Settings::values.bg_blue.SetValue(static_cast<u8>(bg_color.blue()));
         }
     }
-    Settings::UpdateRescalingInfo();
 }
 
 void ConfigureGraphics::changeEvent(QEvent* event) {