[libxml2] Ensure LF line endings for test files

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 40e7ceaaaff71f6b815a3601de9a4e7ccd602431
Author: Markus Rickert <rickert fortiss org>
Date:   Thu Jun 4 11:57:28 2020 +0200

    Ensure LF line endings for test files

 .gitattributes | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 00000000..f013810a
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+/result/** text=lf eol=lf
+/test/** text=lf eol=lf