[coreboot] Patch merged into coreboot/master: 613c0f6 libpayload: Stub out time keeping functions for ARM as well

the following patch was just integrated into master:
commit 613c0f630a5fdcb0837d36b8a9104007f0ee7137
Author: Gabe Black 
Date:   Fri Jan 18 15:04:07 2013 -0800

libpayload: Stub out time keeping functions for ARM as well

These were currently stubbed out for PowerPC but not for ARM.

Change-Id: I08f45174877bf5751d972078b8c53d82898b7f2b
    Signed-off-by: Gabe Black 
    Reviewed-on: http://review.coreboot.org/2655
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

Build-Tested: build bot (Jenkins) at Tue Mar 12 04:39:58 2013, giving +1
Reviewed-By: Ronald G. Minnich  at Wed Mar 13 23:06:26 2013, giving +2
See http://review.coreboot.org/2655 for details.

-gerrit