runtime: add three new partial orders for lock ranking
Two are associated with the new sysmon rank: lockRankSysmon -> lockRankFin
(https://build.golang.org/log/
07b0b8ee6ec9421d83699a1d850d9938390fb996)
and one I encountered during testing, lockRankSysmon -> lockRankWbufSpans
And another just seems not to have occurred before: lockRankScavenge -> lockRankFin
(https://build.golang.org/log/
07ba499b861fc93f527ef8514f5ba4c77086f4c4)
Change-Id: I070b5ed8e742857e815c6a56f8439d17a0ba36f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/236137
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>