intel/vec4: Also use MOV_FOR_SCRATCH for swizzle resolves

intel/vec4: Also use MOV_FOR_SCRATCH for swizzle resolves

In 2db88679432b, we introduced a new meta-op MOV_FOR_SCRATCH which is
identical to MOV except it lets us identify MOVs emitted during spilling
so we know not to re-spill those instructions.  We emit them from
shuffle_for_64bit_data whenever the new for_scratch parameter is true.
Unfortunately, we missed the one used for resolving swizzles.

Fixes: 2db88679432b "intel/vec4: Don't spill fp64 registers more..."
Tested-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11155>