include: Add definition for FILE_LINK_INFORMATION struct.

include/winternl.h

@@ -567,6 +567,13 @@ typedef struct _FILE_RENAME_INFORMATION {
     WCHAR FileName[1];
 } FILE_RENAME_INFORMATION, *PFILE_RENAME_INFORMATION;
 
+typedef struct _FILE_LINK_INFORMATION {
+    BOOLEAN ReplaceIfExists;
+    HANDLE RootDirectory;
+    ULONG FileNameLength;
+    WCHAR FileName[1];
+} FILE_LINK_INFORMATION, *PFILE_LINK_INFORMATION;
+
 typedef struct _FILE_NAMES_INFORMATION {
     ULONG NextEntryOffset;
     ULONG FileIndex;