ARM: OMAP: Replace mach-omap/omap2 with mach-omap2

Update board Apollon with correct file path.
Signed-off-by: Trilok Soni <soni.trilok@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-apollon.c

@@ -4,7 +4,7 @@
  * Copyright (C) 2005,2006 Samsung Electronics
  * Author: Kyungmin Park <kyungmin.park@samsung.com>
  *
- * Modified from mach-omap/omap2/board-h4.c
+ * Modified from mach-omap2/board-h4.c
  *
  * Code for apollon OMAP2 board. Should work on many OMAP2 systems where
  * the bootloader passes the board-specific data to the kernel.