zephyr: lib: sockets: getaddrinfo don't work without newlib C on ARM

Describe the bug The getaddrinfo (zsock_getaddrinfo) method fail with DNS_EAI_MEMORY error at calloc.

from subsys/net/lib/sockets/getaddrinfo.c:

int zsock_getaddrinfo(const char *host, const char *service,
		      const struct zsock_addrinfo *hints,
		      struct zsock_addrinfo **res)
{
	if (IS_ENABLED(CONFIG_NET_SOCKETS_OFFLOAD)) {
		return socket_offload_getaddrinfo(host, service, hints, res);
	}

#if defined(CONFIG_DNS_RESOLVER)
	int ret;

	*res = calloc(AI_ARR_MAX, sizeof(struct zsock_addrinfo));
	if (!(*res)) {
		return DNS_EAI_MEMORY;
	}
	ret = z_zsock_getaddrinfo_internal(host, service, hints, *res);
	if (ret) {
		free(*res);
		*res = NULL;
	}
	return ret;
#endif

	return DNS_EAI_FAIL;
}

To Reproduce Can look at https://github.com/nandojve/zephyr/tree/topic/tagoio_http_post_json project. It is an functional test with TagoIO IoT Platform using HTTP post.

The implementation is in int tagoio_connect(struct tagoio_context_t *ctx) method on socket.c file.

Expected behavior Proper getaddrinfo function working independent of libC.

Impact/workaround Don’t work without add newlib C.

Environment:

• OS: Linux Debian Buster (10)
• Toolchain Zephyr SDK 0.11.3
• Commit SHA or Version used

Additional context I noted that DNS on shell works independent of the lib C used.