const internal/bytealg.offsetX86HasAVX2

one use

	internal/bytealg (current package)
		bytealg.go#L16: 	offsetX86HasAVX2   = unsafe.Offsetof(cpu.X86.HasAVX2)

The pages are generated with Golds v0.2.8-preview. (GOOS=darwin GOARCH=arm64)