Add Ralf Herz to credits for line out patch.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9182 a1c6a512-1295-4272-9138-f99709370657
diff --git a/docs/CREDITS b/docs/CREDITS
index 4866526..6cae3fd 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -185,3 +185,4 @@
 Eli Sherer
 Fredrik Öhrn
 Nicolas Pennequin
+Ralf Herz