[AArch64] NFC : Change the way SVE pseudos are appended

  * SVE pseudos don't pick up the right latency information during MI
    scheduling as the regex do not match with instruction name.

  * Move UNDEF, PSEUDO, and ZERO to the end of actual SVE instruction

  * Some CPUs *td files will be fixed in the next commit

    Differential Revision: https://reviews.llvm.org/D154232