vbutil_what_keys - any file 8M or less is a BIOS image
vbutil_what_keys - any file 8M or less is a BIOS image

BUG=chrome-os-partner:7878
TEST=none

Well, you could test it like so:

  flashrom -r /dev/null -i GBB:/tmp/GBB.bin
  vbutil_what_keys GBB.bin

except that the current ChromeOS image doesn't include vbutil_what_keys. It
probably should, but that's a different CL.

Change-Id: I1e5b6cf30a81a46cb5c8c5d9b10f351dafa9ca87
Reviewed-on: https://gerrit.chromium.org/gerrit/15359
Commit-Ready: Bill Richardson <129945214b1d548d8e49b6c29c43094f8c78057f@chromium.org>
Tested-by: Bill Richardson <129945214b1d548d8e49b6c29c43094f8c78057f@chromium.org>
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

acorn-marvell/vboot_reference,coreboot/vboot,ccaapton/vboot_reference,ionave/seismograph,geekboxzone/mmallow_external_vboot_reference,coreboot/vboot,marineam/seismograph,coreboot/vboot,ionave/seismograph,marineam/seismograph,ccaapton/vboot_reference,ccaapton/vboot_reference,acorn-marvell/vboot_reference,ccaapton/vboot_reference,coreboot/vboot,geekboxzone/mmallow_external_vboot_reference,acorn-marvell/vboot_reference,coreboot/vboot,geekboxzone/mmallow_external_vboot_reference,geekboxzone/mmallow_external_vboot_reference,ionave/seismograph,marineam/seismograph,geekboxzone/mmallow_external_vboot_reference,acorn-marvell/vboot_reference,marineam/seismograph