[release-branch.go1.14] runtime/cgo: fix Android build with NDK 22

Fixes #43405

Change-Id: I7d2b70098a4ba4dcb325fb0be076043789b86135
Reviewed-on: https://go-review.googlesource.com/c/go/+/280312


Run-TryBot: Elias Naur <mail@eliasnaur.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Elias Naur <mail@eliasnaur.com>
(cherry picked from commit 1d781391)
Reviewed-on: https://go-review.googlesource.com/c/go/+/289150