Revert "Remove further remains of hardware skinning."

This reverts commit 40db61a680.

GPU/Common/VertexDecoderArm64.cpp

@@ -193,7 +193,7 @@ JittedVertexDecoder VertexDecoderJitCache::Compile(const VertexDecoder &dec, int
 	// Add code to convert matrices to 4x4.
 	// Later we might want to do this when the matrices are loaded instead.
 	int boneCount = 0;
-	if (dec.weighttype) {
+	if (dec.weighttype && g_Config.bSoftwareSkinning && dec.morphcount == 1) {
 		// Copying from R3 to R4
 		MOVP2R(X3, gstate.boneMatrix);
 		MOVP2R(X4, bones);