util/cbfstool: Remove whitespace before tab

Change-Id: I122acaf9129afaa7b3ae8fd50d8717138809132e
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/26669
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2 files changed