TI:armv7: Change Falcon Mode DT load address

TI:armv7: Change Falcon Mode DT load address

In general, we want to load the DT at base+128MB, so that we ahve
sufficient room for the kernel and a larger device tree.  In the case of
OMAP3, use 64MB instead as we have a number of boards with 128MB DDR.

Signed-off-by: Tom Rini <trini@ti.com>