[VE] Support more intrinsics

Support new intrinsics for following instrauctions.
  - VLDZ, VPCNT, VBRV
  - LCR, SCR, TSCR, FIDCR
  - FENCE
Also clean the intrinsics implementation of a following instruction.
  - SVOB

Reviewed By: simoll

Differential Revision: https://reviews.llvm.org/D121509