go.sys: update package names
Semi-automatic migration from package syscall to package {plan9,windows,unix}.
No builds attempted yet, but this gets a lot of noise behind us so subsequent
CLs will be more concise and easier to follow.
Subsequent CLs will have semantic content.
LGTM=rsc
R=golang-codereviews, rsc
CC=golang-codereviews
https://golang.org/cl/121520043
diff --git a/unix/ztypes_netbsd_386.go b/unix/ztypes_netbsd_386.go
index 6add325..345bf23 100644
--- a/unix/ztypes_netbsd_386.go
+++ b/unix/ztypes_netbsd_386.go
@@ -1,7 +1,7 @@
// Created by cgo -godefs - DO NOT EDIT
// cgo -godefs types_netbsd.go
-package syscall
+package unix
const (
sizeofPtr = 0x4
