Patch merged into coreboot/master: 777fbfa x86: use car_(get|set)_var accessors for apic timer

the following patch was just integrated into master:
commit 777fbfa22342d76b0ca2eaed6f275fa8a6672151
Author: Aaron Durbin 
Date:   Fri Mar 28 08:40:59 2014 -0500

x86: use car_(get|set)_var accessors for apic timer

The timer_fsb variable was not correctly being accessed in the
    presence of cache-as-ram. The cache-as-ram backing store could
    be torn down but then udelay() could be called causing hangs from
    accessing variables that have unknown values.

Instead change the timer_fsb variable to g_timer_fsb and obtain
    the value through a local access method that does the correct things
    to obtain the correct value.

Change-Id: Ia3e30808498cbe4a7f6f116c17a8cf1240a807a3
    Signed-off-by: Aaron Durbin

See http://review.coreboot.org/5411 for details.

-gerrit