Patch merged into coreboot/master: 630e4e8 am335x: Make the default media for the bootblock sram instead of NAND flash.

the following patch was just integrated into master:
commit 630e4e8c7efa6306fb831cb1c9b6cabd53747a5a
Author: Gabe Black 
Date:   Mon Jul 1 05:38:45 2013 -0700

am335x: Make the default media for the bootblock sram instead of NAND flash.

The SOC's built in ROM loads the bootblock and the ROM stage into the on chip
    memory before handing over control to the bootblock. To avoid having to add
    one or more driver to the bootblock so that it can re-load the ROM stage from
    whatever media Coreboot is stored on, we can just take advantage of the copy
    that's already there. Loading the RAM stage/payloads won't be so simple,
    so the ROM stage and the RAM stage will have to have different media drivers.

Change-Id: Id74ed4bc3afd2063277a36e666080522af2305dd
    Signed-off-by: Gabe Black 
    Reviewed-on: http://review.coreboot.org/3583
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

See http://review.coreboot.org/3583 for details.

-gerrit