[coreboot-gerrit] Patch merged into coreboot/master: x86 SMM: Fix use with RELOCATABLE_RAMSTAGE

the following patch was just integrated into master:
commit 9d8adc0e3a923e1d201d50344f94a9176e5ec939
Author: Kyösti Mälkki 
Date:   Sun Dec 4 22:17:37 2016 +0200

x86 SMM: Fix use with RELOCATABLE_RAMSTAGE

The value for _size was not evaluated correctly if ramstage
    is relocated, make the calculation runtime.

While touching it, move symbol declarations to header file.

Change-Id: I4402315945771acf1c86a81cac6d43f1fe99a2a2
    Signed-off-by: Kyösti Mälkki 
    Reviewed-on: https://review.coreboot.org/17784
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin

See https://review.coreboot.org/17784 for details.

-gerrit