Added config option for AVX2 dataset init

-1 = Auto detect
0 = Always disabled
1 = Enabled if AVX2 is supported

src/crypto/randomx/vm_compiled.hpp

@@ -59,7 +59,7 @@ namespace randomx {
 	protected:
 		void execute();
 
-		JitCompiler compiler{ true };
+		JitCompiler compiler{ true, false };
 	};
 
 	using CompiledVmDefault = CompiledVm<1>;