Add 64-bit data size support to SHL and SHR, add simulator logic to
support new data size, and fix disasm.

For the disasm fix, casting size / 16 to NeonSize no longer works when
given a size of 64, it is 4, but should be 3.

Change-Id: I5bd1ce254cd3ff4b86159837087f22b2ed06703e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1994180Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65825}