OMAP4: Pandaboard: Add omap_reserve functionality

This patch adds omap_reserve functionality to board-omap4panda.c.
Helps in the reserving boot time memory in SDRAM, used here for
framebuffer allocation.

This patch is in similar lines to commit id 71ee7dad, from
Russell king

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Raghuveer Murthy <raghuveer.murthy@ti.com>
[tony@atomide.com: fixed to be before .map_io as pointed out by Russell King]
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-omap4panda.c

@@ -406,6 +406,7 @@ static void __init omap4_panda_map_io(void)
 MACHINE_START(OMAP4_PANDA, "OMAP4 Panda board")
 	/* Maintainer: David Anders - Texas Instruments Inc */
 	.boot_params	= 0x80000100,
+	.reserve	= omap_reserve,
 	.map_io		= omap4_panda_map_io,
 	.init_irq	= omap4_panda_init_irq,
 	.init_machine	= omap4_panda_init,