vi2uc, etc. should apply the D prefix as float.

So say tests on an actual PSP.

Core/MIPS/MIPSIntVFPU.cpp

@@ -856,7 +856,7 @@ namespace MIPSInt
 			_dbg_assert_msg_(CPU,0,"Trying to interpret instruction that can't be interpreted");
 			break;
 		}
-		ApplyPrefixD((float*)d,oz,true);
+		ApplyPrefixD((float*)d,oz);
 		WriteVector((float*)d,oz,vd);
 		PC += 4;
 		EatPrefixes();