In current code, we use different output modes for boot phase
and setup phase. When split BootManagerUiLib from UiApp code,
we not add logic to save the boot phase mode info which will
be used later. This change add this logic.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>