[ARM] 4633/1: omap build fix when FB enabled

This fixes a section error on OMAP when the framebuffer is enabled.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>