unix: add AT_SYMLINK_FOLLOW const on netbsd

Change-Id: I6f6d9534389800b6f245021db051f96e90411173
Reviewed-on: https://go-review.googlesource.com/c/sys/+/182897
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>

unix/types_netbsd.go

@@ -254,6 +254,7 @@ type Ptmget C.struct_ptmget
 
 const (
 	AT_FDCWD            = C.AT_FDCWD
+	AT_SYMLINK_FOLLOW   = C.AT_SYMLINK_FOLLOW
 	AT_SYMLINK_NOFOLLOW = C.AT_SYMLINK_NOFOLLOW
 )
 

unix/ztypes_netbsd_386.go

@@ -411,6 +411,7 @@ type Ptmget struct {
 
 const (
 	AT_FDCWD            = -0x64
+	AT_SYMLINK_FOLLOW   = 0x400
 	AT_SYMLINK_NOFOLLOW = 0x200
 )
 

unix/ztypes_netbsd_amd64.go

@@ -418,6 +418,7 @@ type Ptmget struct {
 
 const (
 	AT_FDCWD            = -0x64
+	AT_SYMLINK_FOLLOW   = 0x400
 	AT_SYMLINK_NOFOLLOW = 0x200
 )
 

unix/ztypes_netbsd_arm.go

@@ -416,6 +416,7 @@ type Ptmget struct {
 
 const (
 	AT_FDCWD            = -0x64
+	AT_SYMLINK_FOLLOW   = 0x400
 	AT_SYMLINK_NOFOLLOW = 0x200
 )
 

unix/ztypes_netbsd_arm64.go

@@ -418,6 +418,7 @@ type Ptmget struct {
 
 const (
 	AT_FDCWD            = -0x64
+	AT_SYMLINK_FOLLOW   = 0x400
 	AT_SYMLINK_NOFOLLOW = 0x200
 )