vboot/ui: Implement debug info screen
Implement debug info screen with multiple pages.
The debug info screen can be accessed using TAB as keyboard shortcut.
The menu navigation will be added in a separate CL.
The screen has one textbox for displaying one page of debug info,
and three buttons: page up, page down, and back.
make clean && make runtests
TEST=USE="menu_ui" emerge-nami depthcharge
press tab, observe the debug info on the screen
Signed-off-by: Hsuan Ting Chen <firstname.lastname@example.org>
Reviewed-by: Yu-Ping Wu <email@example.com>
Reviewed-by: Joel Kitching <firstname.lastname@example.org>
9 files changed