Added flags for Russia and Australia

Source/Core/DiscIO/VolumeCommon.cpp

@@ -30,9 +30,11 @@ IVolume::ECountry CountrySwitch(u8 CountryCode)
 		case 'M': // Japanese import to PAL regions
 		case 'S': // Spanish-speaking regions
 		case 'P':
-		case 'U': // Australia
 			return IVolume::COUNTRY_EUROPE;
 
+		case 'U': // Australia
+			return IVolume::COUNTRY_AUSTRALIA;
+
 		case 'F':
 			return IVolume::COUNTRY_FRANCE;