cmd/internal/objabi, internal/runtime: increase nosplit limit on OpenBSD
OpenBSD is bumping up against the nosplit limit, and openbsd/ppc64
is over it. Increase StackGuardMultiplier on OpenBSD, matching AIX.
Change-Id: I61e17c99ce77e1fd3f368159dc4615aeae99e913
Reviewed-on: https://go-review.googlesource.com/c/go/+/632996 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com>