GameInis: All Sega Master System games need RealXFB

I did some testing and they all do strided XFB copies like Sonic
and Knuckles, which is currently only implemented in RealXFB.

Data/Sys/GameSettings/L.ini

@@ -11,7 +11,7 @@ EmulationIssues =
 [Video_Settings]
 SafeTextureCacheColorSamples = 0
 UseXFB = True
-UseRealXFB = False
+UseRealXFB = True
 
 [Wii]
 Widescreen = False