FS#7361 by Rhino Tanga: Move the id3 tag buffer size into a #define

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13730 a1c6a512-1295-4272-9138-f99709370657
diff --git a/docs/CREDITS b/docs/CREDITS
index c61937a..408e8f0 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -300,6 +300,7 @@
 Ivan Zupan
 Alexander Papst
 Christoph Reiter
+Rhino Banga
 The libmad team
 The wavpack team
 The ffmpeg team