Give credit to the chip8 developer(s) and the contributor who ported it

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13799 a1c6a512-1295-4272-9138-f99709370657
diff --git a/docs/CREDITS b/docs/CREDITS
index 86edb10..4ae613a 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -303,6 +303,7 @@
 Rhino Banga
 Paul Jones
 Michael Giacomelli
+Alex Wenger
 The libmad team
 The wavpack team
 The ffmpeg team
@@ -321,3 +322,4 @@
 The ALAC decoder team
 The UCL team
 The iPod Linux team
+The Vision-8 Emulator team