const golang.org/x/sys/unix.FP_XSTATE_MAGIC2

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux_amd64.go#L91: 	FP_XSTATE_MAGIC2                 = 0x46505845

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