DEV9: Add adapter reset function

pcsx2/DEV9/net.cpp

@@ -67,6 +67,12 @@ void tx_put(NetPacket* pkt)
 	//pkt must be copied if its not processed by here, since it can be allocated on the callers stack
 }
 
+void ad_reset()
+{
+	if (nif != nullptr)
+		nif->reset();
+}
+
 NetAdapter* GetNetAdapter()
 {
 	NetAdapter* na = nullptr;

pcsx2/DEV9/net.h

@@ -117,6 +117,7 @@ class NetAdapter
 	virtual bool isInitialised() = 0;
 	virtual bool recv(NetPacket* pkt); //gets a packet
 	virtual bool send(NetPacket* pkt); //sends the packet and deletes it when done
+	virtual void reset(){};
 	virtual void reloadSettings() = 0;
 	virtual void close(){};
 	virtual ~NetAdapter();
@@ -145,6 +146,8 @@ class NetAdapter
 };
 
 void tx_put(NetPacket* ptr);
+void ad_reset();
+
 void InitNet();
 void ReconfigureLiveNet(const Pcsx2Config& old_config);
 void TermNet();

pcsx2/DEV9/smap.cpp

@@ -267,6 +267,7 @@ void emac3_write(u32 addr)
 			if (value == 0x380f0000)
 			{
 				Console.WriteLn("DEV9: Adapter Detection Hack - Resetting RX/TX");
+				ad_reset();
 				_DEV9irq(SMAP_INTR_RXEND | SMAP_INTR_TXEND | SMAP_INTR_TXDNV, 5);
 			}
 			break;