Instructions added: CLDEMOTE, CLWB, TPAUSE, UMWAIT, UMONITOR.

Change-Id: I1ba550d4d5acc41a2fd97068ff5834e0412d3bcf
Reviewed-on: https://go-review.googlesource.com/c/go/+/183225
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>