Add support for FullDuplex property

Adds support for FullDuplex property. This is already implemented by
calling ethtool ioctl but not populated on DBus so far. This property
is used for Redfish's FullDuplex property.

Tested:
Verified FullDuplex is populated on DBus.

Change-Id: Iff6939b88083520837811503a290670ff65e16eb
Signed-off-by: Ravi Teja <raviteja28031990@gmail.com>
diff --git a/src/ethernet_interface.cpp b/src/ethernet_interface.cpp
index a6b37ef..9919ceb 100644
--- a/src/ethernet_interface.cpp
+++ b/src/ethernet_interface.cpp
@@ -165,6 +165,7 @@
         });
         EthernetInterfaceIntf::autoNeg(ethInfo.autoneg, skipSignal);
         EthernetInterfaceIntf::speed(ethInfo.speed, skipSignal);
+        EthernetInterfaceIntf::fullDuplex(ethInfo.fullDuplex, skipSignal);
     }
 }