Merge branches 'pr6941', 'pr6810' and 'pr6913' into feature-emac-17May-merge

* pr6941:
  Removed EMAC get default instance from EMAC tests

* pr6810:
  LPC546XX: Correct Ethernet length calculations
  LPC546XX: Correct Ethernet MAC address write
  Add memory configuration for LPC546XX
  LPC546XX: Add ENET support

* pr6913:
  WiFi EMAC class name reflected in WiFi drivers binaries
  WIFI_EMAC class renamed to OdinWiFiEMAC, Formatting Revert "in ODIN emac initialization required before connection"
  in ODIN emac initialization required before connection
  EMAC adaption added, updated ODIN drivers to v2.5.0 RC1

Author: kjbracey

TESTS/network/emac/emac_TestNetworkStack.cpp

@@ -161,7 +161,7 @@ char *EmacTestNetworkStack::Interface::get_gateway(char *buf, nsapi_size_t bufle
 
 nsapi_error_t EmacTestNetworkStack::Interface::bringup(bool dhcp, const char *ip, const char *netmask, const char *gw, const nsapi_ip_stack_t stack, bool blocking)
 {
-    if (!emac_if_init()) {
+    if (!emac_if_init(m_emac)) {
         TEST_ASSERT_MESSAGE(0, "emac initialization failed!");
     }
 

TESTS/network/emac/emac_initialize.h

@@ -19,7 +19,7 @@
 #define EMAC_INITIALIZE_H
 
 unsigned char *emac_if_get_hw_addr(void);
-bool emac_if_init(void);
+bool emac_if_init(EMAC *emac);
 EMAC *emac_if_get(void);
 EmacTestMemoryManager *emac_m_mngr_get(void);
 

TESTS/network/emac/emac_test_initialize.cpp

@@ -48,6 +48,7 @@
 using namespace utest::v1;
 
 static unsigned char eth_mac_addr[ETH_MAC_ADDR_LEN];
+EMAC *emac_handle = NULL;
 
 void test_emac_initialize()
 {
@@ -104,17 +105,17 @@ unsigned char *emac_if_get_hw_addr(void)
 
 EMAC *emac_if_get(void)
 {
-    return &EMAC::get_default_instance();
+    return emac_handle;
 }
 
 EmacTestMemoryManager *emac_m_mngr_get(void)
 {
     return &EmacTestMemoryManager::get_instance();
 }
 
-bool emac_if_init(void)
+bool emac_if_init(EMAC *emac)
 {
-    static EMAC *emac = &EMAC::get_default_instance();
+    emac_handle = emac;
 
     emac->set_link_input_cb(emac_if_link_input_cb);
     emac->set_link_state_cb(emac_if_link_state_change_cb);

features/FEATURE_LWIP/lwip-interface/LWIPInterface.cpp

@@ -587,6 +587,11 @@ nsapi_error_t LWIP::Interface::bringdown()
 #if LWIP_IPV6
     mbed_lwip_clear_ipv6_addresses(&netif);
 #endif
+#if LWIP_IPV4
+    ip_addr_set_zero(&(netif.ip_addr));
+    ip_addr_set_zero(&(netif.netmask));
+    ip_addr_set_zero(&(netif.gw));
+#endif
 
     osSemaphoreDelete(has_any_addr);
     osSemaphoreAttr_t attr;