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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux.go#L4437: 	NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS = 0x18

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