Patch merged into coreboot/master: 5c0b7ab libpayload: Generalize and redistribute timekeeping code

the following patch was just integrated into master:
commit 5c0b7abe786d7b4370ed1dd7ef323a3091d9620c
Author: Gabe Black 
Date:   Fri Feb 22 16:38:53 2013 -0800

libpayload: Generalize and redistribute timekeeping code

The timekeeping code in libpayload was dependent on rdtsc, and when it was
    split up by arch, that code was duplicated even though it was mostly the same.
    This change factors out actually reading the count from the timer and the
    speed of the timer and puts the definitions of ndelay, udelay, mdelay and
    delay into generic code. Then, in x86, the timer_hz and timer_get_raw_value
    functions which used to be in depthcharge were moved over to libpayload's
    arch/x86/timer.c. In ARM where there isn't a single, canonical timer, those
    functions are omitted with the intention that they'll be implemented by a
    specific timer driver chosen elsewhere.

Change-Id: I9c919bed712ace941f417c1d58679d667b2d8269
    Signed-off-by: Gabe Black 
    Reviewed-on: http://review.coreboot.org/2717
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

Build-Tested: build bot (Jenkins) at Thu Mar 14 01:12:54 2013, giving +1
Reviewed-By: Ronald G. Minnich  at Thu Mar 14 04:53:33 2013, giving +2
See http://review.coreboot.org/2717 for details.

-gerrit