NetworkPkg: Support print help information using -? command.

v2:
*Modify the logic of show SAD,SPD and PAD help info, include them in -?
instead of follow -p command.

Since Shell supports finding help information from resource section
of application image. We modify the Shell application Under NetworkPkg
to support print help information string using -? command.

Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Cc: Wu Jiaxin <jiaxin.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Zhang Lubo <lubo.zhang@intel.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>

NetworkPkg/Application/VConfig/VConfig.inf

@@ -3,7 +3,7 @@
 #
 #  It is shell application which is used to get and set VLAN configuration.
 #
-#  Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
 #
 #  This program and the accompanying materials
 #  are licensed and made available under the terms and conditions of the BSD License
@@ -24,6 +24,12 @@
   ENTRY_POINT                    = VlanConfigMain
   MODULE_UNI_FILE                = VConfig.uni
 
+#
+#
+#  This flag specifies whether HII resource section is generated into PE image.
+#
+  UEFI_HII_RESOURCE_SECTION      = TRUE
+
 #
 #  VALID_ARCHITECTURES           = IA32 X64 IPF
 #
@@ -40,6 +46,7 @@
 [LibraryClasses]
   UefiApplicationEntryPoint
   UefiBootServicesTableLib
+  UefiHiiServicesLib
   UefiLib
   ShellLib
   NetLib
@@ -47,7 +54,8 @@
   HiiLib
 
 [Protocols]
-  gEfiVlanConfigProtocolGuid     ## CONSUMES
+  gEfiVlanConfigProtocolGuid       ## CONSUMES
+  gEfiHiiPackageListProtocolGuid   ## CONSUMES
 
 [UserExtensions.TianoCore."ExtraFiles"]
   VConfigExtra.uni