internal/cpu: replace arch dependent with generic minimal feature test

internal/cpu: replace arch dependent with generic minimal feature test

Use information about required CPU features stored in the CPU feature
options slice to test if minimal CPU requirements are met instead
of hard coding this information in the tests directly.

Change-Id: I72d89b1cff305b8e751995d4230a2217e32f4236
Reviewed-on: https://go-review.googlesource.com/c/145118
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Martin Möhrmann <martisch@uos.de>
TryBot-Result: Gobot Gobot <gobot@golang.org>