Patch merged into coreboot/master: df3629b northbridge/amd/{gx2, lx}: Qualify pointer with `volatile`

the following patch was just integrated into master:
commit df3629b63cc840f089cfd645fc5cf992bbbffe16
Author: Edward O'Callaghan 
Date:   Sat Jun 28 17:31:58 2014 +1000

northbridge/amd/{gx2,lx}: Qualify pointer with `volatile`

There is no guarantee reading a dereferenced null pointer will not be
    optimised away. Qualify the integer storage type with volatile. Clang
    enforces this explicitness.

Change-Id: I31524141d70632cade0490c820936a3a8b570346
    Signed-off-by: Edward O'Callaghan 
    Reviewed-on: http://review.coreboot.org/6148
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/6148 for details.

-gerrit