Patch merged into coreboot/master: b2aee6f vboot2: Replace hard coded 'fallback' prefix with Kconfig variable

the following patch was just integrated into master:
commit b2aee6f2e7c61ae87ddfdab00c22775313603981
Author: Patrick Georgi 
Date:   Tue May 5 22:47:00 2015 +0200

vboot2: Replace hard coded 'fallback' prefix with Kconfig variable

Change-Id: I9cbdf06f4d0956b5374915f8af7501c6f75b4687
    Signed-off-by: Patrick Georgi 
    Reviewed-on: http://review.coreboot.org/10113
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/10113 for details.

-gerrit