ARM: OMAP: Fix typo in arch/arm/mach-omap2/board-n800.h

Fix typo in arch/arm/mach-omap2/board-n800.h file.
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-n800.h

 /*
- * linux/arch/arm/mach-omap2/board-n800.c
+ * linux/arch/arm/mach-omap2/board-n800.h
  *
  * Copyright (C) 2005-2007 Nokia Corporation
  * Author: Lauri Leukkunen <lauri.leukkunen@nokia.com>