Add Mario support for fwupdate_tries
Add Mario support for fwupdate_tries

Change-Id: I1c4240ebe5783ca923c310061e2a76947aa6601b

R=reinauer@chromium.org
BUG=chromium-os:14030
TEST=manual

On a Mario:
  crossystem fwupdate_tries=3
  crossystem fwupdate_tries # should be 3
  cat /mnt/stateful_partition/.need_firmware_update # should be 3

  crossystem fwupdate_tries=0
  crossystem fwupdate_tries # should be 0
  cat /mnt/stateful_partition/.need_firmware_update # should complain file doesn't exist

On a newer platform:
  crossystem fwupdate_tries=3
  crossystem fwupdate_tries # should be 3
  cat /mnt/stateful_partition/.need_firmware_update # should complain file doesn't exist

  crossystem fwupdate_tries=0
  crossystem fwupdate_tries # should be 0
  cat /mnt/stateful_partition/.need_firmware_update # should complain file doesn't exist

Review URL: http://codereview.chromium.org/6825047

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