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

one use

	golang.org/x/sys/unix (current package)
		ztypes_linux_amd64.go#L730: 	GPIO_GET_CHIPINFO_IOCTL = 0x8044b401

The pages are generated with Golds v0.8.4. (GOOS=linux GOARCH=amd64)