vboot2: consolidate vboot2 buffer initialization

Instead of calling the init function to clear out vboot2 data structures in
multiple places, move the function and call close to verstage_main().

Change-Id: If42e18a8e4581f22f7a7aced70ccbe3188bb0cd5
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10701
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2 files changed