const golang.org/x/sys/unix.BPF_REG_0

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L2516: 	BPF_REG_0                                  = 0x0

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)