Kernel: Start adding support for E1000 network adapters.

Kernel/NetworkAdapter.cpp

@@ -0,0 +1,16 @@
+#include <Kernel/NetworkAdapter.h>
+#include <Kernel/StdLib.h>
+
+NetworkAdapter::NetworkAdapter()
+{
+    memset(&m_mac_address, 0, sizeof(m_mac_address));
+}
+
+NetworkAdapter::~NetworkAdapter()
+{
+}
+
+void NetworkAdapter::set_mac_address(const byte* mac_address)
+{
+    memcpy(m_mac_address, mac_address, 6);
+}