vboot/ui: Add reinit screen hook

Re-initialize the log screen when going back from another screen.

BRANCH=puff
BUG=b:146399181, b:146105976
TEST=CC=x86_64-pc-linux-gnu-clang;
    make clean && make runtests
TEST=USE="menu_ui" emerge-puff depthcharge
     when the firmware log screen is implemented,
     select "advanced options",
     navigate to firmware log screen,
     press <TAB> to debug info,
     and select back to firmware log screen

Signed-off-by: Hsuan Ting Chen <roccochen@chromium.org>
Change-Id: Ie44805e3bfb14a4a8b660a18a123a184a4c5ea45
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2329224
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
(cherry picked from commit 2cb872fa3056158c35f82a9412e667b69ccf5a49)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2332200
Reviewed-by: Joel Kitching <kitching@chromium.org>
3 files changed