nvramtool couldn't handle certain combinations of sources for CMOS layout and CMOS data. This change allows for nearly all combinations. Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Acked-by: Patrick Georgi <patrick.georgi@secunet.com> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6437 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1