[dev.simd] cmd/compile: output of simdgen with invariant type order

[dev.simd] cmd/compile: output of simdgen with invariant type order

The old order was somewhat input-dependent, and sometimes
produced spurious changes.  This is the last spurious change,
"once and for all!!!"

Generated by simdgen CL 685595

Change-Id: Ic66d0263f3dd9f1ef9502c2deeeb8300ca3bac75
Reviewed-on: https://go-review.googlesource.com/c/go/+/685615
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>