[TCPIP] Synchronize LWIP code to 2.2.0

- take code from STABLE-2_2_0_RELEASE commit on https://git.savannah.gnu.org/git/lwip.git
- remove lwip/contrib directory
- do required changes due to upgrade in
  * CMakeLists.txt
  * include/lwip/arch/cc.h
  * include/lwip/arch/sys_arch.h
  * include/lwip/lwipopts.h
  * include/tcpip.h
  * ip/CMakeLists.txt
  * ip/lwip_glue/lwip_glue.h
  * ip/lwip_glue/tcp.c
  * ip/transport/tcp/if.c
  * tcpip/icmp.c

CORE-13098

drivers/network/tcpip/lwip/test/unit/lwip_unittests.c

@@ -1,32 +1,112 @@
 #include "lwip_check.h"
 
+#include "ip4/test_ip4.h"
+#include "ip6/test_ip6.h"
 #include "udp/test_udp.h"
 #include "tcp/test_tcp.h"
 #include "tcp/test_tcp_oos.h"
+#include "tcp/test_tcp_state.h"
+#include "core/test_def.h"
+#include "core/test_dns.h"
 #include "core/test_mem.h"
+#include "core/test_netif.h"
+#include "core/test_pbuf.h"
+#include "core/test_timers.h"
 #include "etharp/test_etharp.h"
+#include "dhcp/test_dhcp.h"
+#include "mdns/test_mdns.h"
+#include "mqtt/test_mqtt.h"
+#include "api/test_sockets.h"
+#include "ppp/test_pppos.h"
 
 #include "lwip/init.h"
+#if !NO_SYS
+#include "lwip/tcpip.h"
+#endif
 
+/* This function is used for LWIP_RAND by some ports... */
+unsigned int
+lwip_port_rand(void)
+{
+  return (unsigned int)rand();
+}
 
-int main()
+Suite* create_suite(const char* name, testfunc *tests, size_t num_tests, SFun setup, SFun teardown)
+{
+  size_t i;
+  Suite *s = suite_create(name);
+
+  for(i = 0; i < num_tests; i++) {
+    TCase *tc_core = tcase_create(name);
+    if ((setup != NULL) || (teardown != NULL)) {
+      tcase_add_checked_fixture(tc_core, setup, teardown);
+    }
+    tcase_add_named_test(tc_core, tests[i]);
+    suite_add_tcase(s, tc_core);
+  }
+  return s;
+}
+
+void lwip_check_ensure_no_alloc(unsigned int skip)
+{
+  int i;
+  unsigned int mask;
+
+  if (!(skip & SKIP_HEAP)) {
+    fail_unless(lwip_stats.mem.used == 0,
+      "mem heap still has %d bytes allocated", lwip_stats.mem.used);
+  }
+  for (i = 0, mask = 1; i < MEMP_MAX; i++, mask <<= 1) {
+    if (!(skip & mask)) {
+      fail_unless(lwip_stats.memp[i]->used == 0,
+        "memp pool '%s' still has %d entries allocated",
+        lwip_stats.memp[i]->name, lwip_stats.memp[i]->used);
+    }
+  }
+}
+
+#ifdef LWIP_UNITTESTS_LIB
+int lwip_unittests_run(void)
+#else
+int main(void)
+#endif
 {
   int number_failed;
   SRunner *sr;
   size_t i;
   suite_getter_fn* suites[] = {
+    ip4_suite,
+    ip6_suite,
     udp_suite,
     tcp_suite,
     tcp_oos_suite,
+    tcp_state_suite,
+    def_suite,
+    dns_suite,
     mem_suite,
-    etharp_suite
+    netif_suite,
+    pbuf_suite,
+    timers_suite,
+    etharp_suite,
+    dhcp_suite,
+    mdns_suite,
+    mqtt_suite,
+    sockets_suite
+#if PPP_SUPPORT && PPPOS_SUPPORT
+    , pppos_suite
+#endif /* PPP_SUPPORT && PPPOS_SUPPORT */
   };
   size_t num = sizeof(suites)/sizeof(void*);
   LWIP_ASSERT("No suites defined", num > 0);
 
+#if NO_SYS
   lwip_init();
+#else
+  tcpip_init(NULL, NULL);
+#endif
 
   sr = srunner_create((suites[0])());
+  srunner_set_xml(sr, "lwip_unittests.xml");
   for(i = 1; i < num; i++) {
     srunner_add_suite(sr, ((suite_getter_fn*)suites[i])());
   }