Update to current master. Beside a minor workaround for GCC 8 compatibility, this includes only refactorings and preparations for G4x support. Change-Id: I6b2aa6bd9d41b852dacd8e1dfe89d92c8a548121 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/26420 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>