vboot2: Move and rename functions

Move packed key functions to their own file, in preparation for
introducing support for vb2_packed_key2.

Rename the awfully-named vb2_verify_fw_preamble2() function to
vb2_load_fw_premable(), since the new structs actually have a
vb2_fw_preamble2 struct and that would be very confusing.

Rename vb2_verify_fw_keyblock() to vb2_load_fw_keyblock(), so it

No functional changes, just renaming.

TEST=VBOOT2=1 make runtests

Change-Id: Ia914e48e6c5814ab3205b999ceda1aa2452206ff
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/225458
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
9 files changed