Patch merged into coreboot/master: 812d2a4 northbridge/amd: Use DEVICE_NOOP macro over dummy symbol

the following patch was just integrated into master:
commit 812d2a47d4cdc0475dd06c14623881ca9d543c99
Author: Edward O'Callaghan 
Date:   Fri Oct 31 08:17:23 2014 +1100

northbridge/amd: Use DEVICE_NOOP macro over dummy symbol

Change-Id: I3fdd2a9f981592112998d74ce4cfe4850d8fab31
    Signed-off-by: Edward O'Callaghan 
    Reviewed-on: http://review.coreboot.org/7288
    Tested-by: build bot (Jenkins)
    Reviewed-by: Bruce Griffith

See http://review.coreboot.org/7288 for details.

-gerrit