Scrubbed some files for IP4

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6447 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/Ip4Dxe/Ip4Icmp.h

@@ -24,7 +24,7 @@ Abstract:
 #ifndef __EFI_IP4_ICMP_H__
 #define __EFI_IP4_ICMP_H__
 
-enum {
+typedef enum {
   //
   // ICMP type definations
   //
@@ -80,7 +80,7 @@ enum {
   ICMP_INVALID_MESSAGE      = 0,
   ICMP_ERROR_MESSAGE        = 1,
   ICMP_QUERY_MESSAGE        = 2
-};
+} ICMP_ENUM_TYPES;
 
 typedef struct {
   UINT8                   IcmpType;