D3D11: Implement some PE pixel performance metrics.

Super Mario Sunshine is using a cool trick: To determine how much goop has been cleaned in ep. 6 of Sirena Beach, it counts the number of pixels that are input to the blending stage. For that it's using the PE performance registers ;)

Fixes issue 1498.

Source/Plugins/Plugin_VideoDX9/Src/main.cpp

@@ -96,6 +96,7 @@ void InitBackendInfo()
 	g_Config.backend_info.bSupports3DVision = true;
 	g_Config.backend_info.bSupportsDualSourceBlend = false;
 	g_Config.backend_info.bSupportsFormatReinterpretation = true;
+	g_Config.backend_info.bSupportsPixelPerfQuery = false;
 	
 	
 	g_Config.backend_info.bSupportsPixelLighting = C_PLIGHTS + 40 <= maxConstants && C_PMATERIALS + 4 <= maxConstants;