Declare VbExProtectFlash() in vboot_api.h so we can implement it.
Declare VbExProtectFlash() in vboot_api.h so we can implement it.

We have to define the function we need here, so that we can implement it in
U-Boot, then we can come back here and try to use it. Grr.

BUG=chrome-os-partner:11215
BRANCH=link
TEST=none

This just defines the function prototype. No change to test.

Change-Id: I38a19baa54c59c9744d20f743eb53260f2d19852
Signed-off-by: Bill Richardson <129945214b1d548d8e49b6c29c43094f8c78057f@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/31658
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

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