NMULAF/NMULAD/NMULSF/NMULSD are incorrectly encoded by the arm
assembler.

Instruction            Right binary      Current wrong binary
"NMULAF	F5, F6, F7"    0xee167a45        0xee167a05
"NMULAD	F5, F6, F7"    0xee167b45        0xee167b05
"NMULSF	F5, F6, F7"    0xee167a05        0xee167a45
"NMULSD	F5, F6, F7"    0xee167b05        0xee167b45

This patch fixes this issue.

fixes issue #23212

Change-Id: Ic9c203f92c34b90d6eef492a694c0e95b4d479c5
Reviewed-on: https://go-review.googlesource.com/85116Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>