Fixes this warning:
  CC      arch/arm/mach-omap2/board-omap3evm-flash.o
arch/arm/mach-omap2/board-omap3evm-flash.c:61: warning: initialization from incompatible pointer type
Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>