[dev.typeparams] runtime: use internal/abi.FuncPCABI0 for sigtramp PC on DragonflyBSD

Same as CL 313230, for DragonflyBSD. sigtramp is the only one we need.

Change-Id: Ic11d0aedc7422512b43b2e4505e8f95056f915bd
Reviewed-on: https://go-review.googlesource.com/c/go/+/321312


Trust: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>