[PATCH] ARM: OMAP2: fix apollon gpmc initialization

After update gpmc patch, apollon can't boot since gpmc init. In Apollon,
the CS0 uses 0x0000 0000.
If we don't modify boot_rom_space, we have to update all bootloaders. But
as you know it's difficult.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>