Patch merged into coreboot/master: a421791 coreboot: introduce monotonic timer API

the following patch was just integrated into master:
commit a421791db815fb2e2da9b1ce4bec78c97665b62f
Author: Aaron Durbin 
Date:   Mon Apr 29 22:31:51 2013 -0500

coreboot: introduce monotonic timer API

The notion of a monotonic timer is introduced. Along with it
    are helper functions and other types for comparing times. This
    is just the framework where it is the responsibility of the
    chipset/board to provide the implementation of timer_monotonic_get().

The reason structs are used instead of native types is to allow
    for future changes to the data structure without chaning all the
    call sites.

Change-Id: Ie56b9ab9dedb0da69dea86ef87ca744004eb1ae3
    Signed-off-by: Aaron Durbin 
    Reviewed-on: http://review.coreboot.org/3152
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

Build-Tested: build bot (Jenkins) at Tue Apr 30 21:58:10 2013, giving +1
Reviewed-By: Ronald G. Minnich  at Wed May  1 07:13:43 2013, giving +2
See http://review.coreboot.org/3152 for details.

-gerrit