MdeModulePkg: Add submitted callback test case in DriverSample

Now we add new HII action type EFI_BROWSER_ACTION_SUBMITTED in
EFI HII Configuration Access Protocol, so add the test case in
DriverSample to show how to use it and whether it works.

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

MdeModulePkg/Universal/DriverSampleDxe/Vfr.vfr

@@ -485,6 +485,16 @@ formset
         help = STRING_TOKEN(STR_TEXT_SECRUITY_TEST_HELP),
         text = STRING_TOKEN(STR_TEXT_SECRUITY_TEST_TEXT);
     endif;
+
+    numeric varid   = MyEfiVar.SubmittedCallback,
+            questionid = 0x1250,
+            prompt  = STRING_TOKEN(STR_SUBMITTED_CALLBACK_TEST_PROMPT),
+            help    = STRING_TOKEN(STR_SUBMITTED_CALLBACK_TEST_HELP),
+            flags   = INTERACTIVE,
+            minimum = 0,
+            maximum = 255,
+            default = 18,
+    endnumeric;
     
     goto 2,
       prompt = STRING_TOKEN(STR_GOTO_FORM2), //SecondSetupPage  // this too has no end-op and basically it's a jump to a form ONLY