Updated NetlinkMessageType for Swift 5.6

Author: colemancda

Sources/Netlink/MessageType.swift

@@ -26,7 +26,7 @@ import Foundation
 
  - SeeAlso: [Netlink Library](https://www.infradead.org/%7Etgr/libnl/doc/core.html#core_addressing)
  */
-public struct NetlinkMessageType: RawRepresentable {
+public struct NetlinkMessageType: RawRepresentable, Equatable, Hashable {
 
     public let rawValue: UInt16
 
@@ -36,16 +36,6 @@ public struct NetlinkMessageType: RawRepresentable {
     }
 }
 
-// MARK: - Equatable
-
-extension NetlinkMessageType: Equatable {
-    
-    public static func == (lhs: NetlinkMessageType, rhs: NetlinkMessageType) -> Bool {
-        
-        return lhs.rawValue == rhs.rawValue
-    }
-}
-
 // MARK: - Types
 
 public extension NetlinkMessageType {