OMAP powerdomain, hwmod, omap_device: add some credits

Add some missing credits for people who have contributed significant features
or fixes.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: BenoƮt Cousson <b-cousson@ti.com>
Cc: Tero Kristo <tero.kristo@nokia.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Thara Gopinath <thara@ti.com>
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index f9f0bca..a2904aa 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -5,8 +5,8 @@
  * Copyright (C) 2007-2009 Nokia Corporation
  *
  * Written by Paul Walmsley
- *
  * Added OMAP4 specific support by Abhijit Pagare <abhijitpagare@ti.com>
+ * State counting code by Tero Kristo <tero.kristo@nokia.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as