Update aarch64 cost model

Author: preames

llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp

@@ -3743,7 +3743,7 @@ InstructionCost AArch64TTIImpl::getInterleavedMemoryOpCost(
   assert(Factor >= 2 && "Invalid interleave factor");
   auto *VecVTy = cast<VectorType>(VecTy);
 
-  if (VecTy->isScalableTy() && (!ST->hasSVE() || Factor != 2))
+  if (VecTy->isScalableTy() && !ST->hasSVE())
     return InstructionCost::getInvalid();
 
   // Vectorization for masked interleaved accesses is only enabled for scalable