According to MediaTek's proprietary PI_IMG parser, two cookies (one
header and one footer) are expected. Therefore, add a script to perform
validity check of the PI_IMG firmware, so that format errors could be
caught in build time.
Change-Id: I27011492c7fab747aa3ee12d514d20a6a52d0a4d
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87226
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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