Export one interface to support 3rd party to change question attribute, such as hide/gray out.

Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14678 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Include/Protocol/DisplayProtocol.h

@@ -137,10 +137,12 @@ EFI_STATUS
 //
 // Attribute for Statement and Form
 //
+#define HII_DISPLAY_NONE             0
 #define HII_DISPLAY_GRAYOUT          BIT0
 #define HII_DISPLAY_LOCK             BIT1
 #define HII_DISPLAY_READONLY         BIT2
 #define HII_DISPLAY_MODAL            BIT3
+#define HII_DISPLAY_SUPPRESS         BIT4
 
 struct _FORM_DISPLAY_ENGINE_STATEMENT{
   UINTN                 Signature;