While booting via usb host mode, ROM uses DMA to copy MLO over USB so
ARM internal RAM cannot be used. Adding USB host boot support by
introducing new config target which sets SPL_TEXT_BASE to OCMC ram.
Signed-off-by: NMugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: NTom Rini <trini@konsulko.com>