MdeModulePkg: Update UefiBootManagerLib to support HTTP boot option creation

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Siyuan Fu <siyuan.fu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17849 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Library/UefiBootManagerLib/InternalBm.h

@@ -91,6 +91,7 @@ typedef enum {
   BmMessageUsbBoot,
   BmMessageScsiBoot,
   BmMessageNetworkBoot,
+  BmMessageHttpBoot,
   BmMiscBoot
 } BM_BOOT_TYPE;