Extract Shufps to handle both AVX and SSE cases, in the SSE case it will
copy src to dst if they are not the same. This allows us to use it in
Liftoff as well, without the extra copy when AVX is supported.

In other places, the usage of Shufps is unnecessary, since they are
within a clause checking for non-AVX support, so we can simply use the
shufps (non-macro-assembler).

Bug: v8:9561
Change-Id: Icb043d7a43397c1b0810ece2666be567f0f5986c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2513866Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70911}