runtime: Check LSE support on ARM64 at runtime init

runtime: Check LSE support on ARM64 at runtime init

Check presence of LSE support on ARM64 chip if we targeted it at compile time.

Related to #69124
Update #60905

Change-Id: I6fe244decbb4982548982e1f88376847721a33c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/610195
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Shu-Chun Weng <scw@google.com>