Add Mark Borgerding to CREDITS, for kiss_fft which is used by the fft plugin


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24588 a1c6a512-1295-4272-9138-f99709370657
diff --git a/docs/CREDITS b/docs/CREDITS
index 37734a3..2d53cd9 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -526,6 +526,7 @@
 Marek Salaba
 Altay Oz
 Peter Lecky
+Mark Borgerding
 
 The libmad team
 The wavpack team