Use uppercase when printing status codes

xtldr/modules/xtos_o/amd64/memory.c

@@ -48,7 +48,7 @@ XtEnablePaging(IN PXTBL_PAGE_MAPPING PageMap)
     if(Status != STATUS_EFI_SUCCESS)
     {
         /* Failed to exit boot services */
-        XtLdrProtocol->Console.Print(L"Failed to exit boot services (Status code: %lx)\n", Status);
+        XtLdrProtocol->Console.Print(L"Failed to exit boot services (Status code: %lX)\n", Status);
         return STATUS_EFI_ABORTED;
     }