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

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux_amd64.go#L256: 	PTP_SYS_OFFSET                   = 0x43403d05

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)