Adding lldp.json to the simulator

Moving the global on/off onto the LLDP page

Building a table of LLDP status from the S ports. Later on, if
we wish to implement an lldp receiver we can display the remote
details here

Adding support to the cmd parser for the lldp commands

cmd_parser.c

@@ -969,9 +969,9 @@ void parse_port(void)
 		phy_set_duplex();
 	} else if (cmd_compare(2, "lldp")) {
 		if (cmd_compare(3, "block")){
-			lldp_port_status &= ~(1 << phy_settings.port);
+			lldp_physical_port_status &= ~(1 << phy_settings.port);
 		} else if (cmd_compare(3, "permit")) {
-			lldp_port_status |= 1 << phy_settings.port;
+			lldp_physical_port_status |= 1 << phy_settings.port;
 		} else {
 			print_string ("Unknown port <port> lldp [block|permit] command\n");
 		}