[AArch64]Add 2 intrinsics vmov_n_p64/vmovq_n_p64, the alias for vdup_n_p64/vdup_n_p64.
As this change is too small, commit it directly.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@220946 91177308-0d34-0410-b5e6-96231b3b80d8