[U-Boot] omap3_beagle problem booting kernel on latest u-boot

[John Rigby]

Aneesh, Dirk, Jason:

During our monthly release testing of Linaro images we discovered that
the kernel was pretty unreliable with the latest upstream u-boot.
After bisecting we found that reverting this patch fixes the problem

commit 45bf05854bc94ed8bae9e9114292895b990327ea
Author: Aneesh V <aneesh at ti.com>
Date:   Thu Jun 16 23:30:53 2011 +0000

    armv7: adapt omap3 to the new cache maintenance framework

    adapt omap3 to the new layered cache maintenance framework

    Signed-off-by: Aneesh V <aneesh at ti.com>

No idea why because we tried disabling cache by adding
CONFIG_SYS_DCACHE_OFF to the board config but that did not seem to fix
the problem.  The problem in the kernel was general instability
usually ending in the rootfs not being mounted.  Sometimes random
kernel crashes have been observed.  We have never made it to a shell
prompt before reverting.

If we figure anything else out we will let you know.

--john