Patch merged into coreboot/master: bae775a arch/x86: Declare GDT symbols and move_gdt()

the following patch was just integrated into master:
commit bae775a4f43449e79622ed144118554ff780744a
Author: Kyösti Mälkki 
Date:   Thu Dec 18 10:36:33 2014 +0200

arch/x86: Declare GDT symbols and move_gdt()

We relocate GDT to CBMEM, this can be done late in ramstage.
    Note: We currently do this for BSP CPU only.

Change-Id: I626faaf22f846433f25ca2253d6a2a5230f50b6b
    Signed-off-by: Kyösti Mälkki 
    Reviewed-on: http://review.coreboot.org/7858
    Reviewed-by: Stefan Reinauer 
    Tested-by: build bot (Jenkins)
    Reviewed-by: Edward O'Callaghan

See http://review.coreboot.org/7858 for details.

-gerrit