lwip2: use pvPortXalloc/vPortFree and "-free -fipa-pta" (#7793)

lwip2: use pvPortXalloc/vPortFree instead of malloc/free and add gcc's '-free -fipa-pta' options

Author: d-a-v

tools/sdk/lib/liblwip2-1460-feat.a

@@ -1,5 +1,5 @@
 // generated by makefiles/make-lwip2-hash
 #ifndef LWIP_HASH_H
 #define LWIP_HASH_H
-#define LWIP_HASH_STR "STABLE-2_1_2_RELEASE/glue:1.2-46-g7d498d9"
+#define LWIP_HASH_STR "STABLE-2_1_2_RELEASE/glue:1.2-48-g7421258"
 #endif // LWIP_HASH_H

tools/sdk/lib/liblwip2-1460.a

@@ -3676,6 +3676,16 @@ void tcp_kill_timewait (void);
 #define MEMP_NUM_TCP_PCB_TIME_WAIT       5
 #endif
 
+/*
+   --------------------------------------------------
+   ----------------- Alloc functions ----------------
+   --------------------------------------------------
+*/
+
+#define mem_clib_free(p)      vPortFree(p, NULL, -1)
+#define mem_clib_malloc(s)   pvPortMalloc(s, NULL, -1)
+#define mem_clib_calloc(n,s) pvPortZalloc(n*s, NULL, -1)
+
 #ifdef __cplusplus
 } // extern "C"
 #endif