MdeModulePkg:Full support F10 hot key in UiApp.

In current UiApp/Boot Maintenance manager,some pages don't support F10,
they use Commit Changes and Exit menu to save changes.Now support F10
in these pages.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18249 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Application/UiApp/BootMaint/Data.c

@@ -38,6 +38,19 @@ UINT16              TerminalType[] = {
   STRING_TOKEN(STR_COM_TYPE_4),
 };
 
+///
+/// Flow Control type string token storage
+///
+UINT16              mFlowControlType[2] = {
+  STRING_TOKEN(STR_NONE_FLOW_CONTROL),
+  STRING_TOKEN(STR_HARDWARE_FLOW_CONTROL)
+};
+
+UINT32              mFlowControlValue[2] = {
+  0,
+  UART_FLOW_CONTROL_HARDWARE
+};
+
 ///
 /// File system selection menu
 ///