tipc: TIPC_NLA_LINK_NAME value pass on nesting entry TIPC_NLA_LINK

tipc: TIPC_NLA_LINK_NAME value pass on nesting entry TIPC_NLA_LINK

In the commit 94f6a80 on next-net, TIPC_NLA_LINK_NAME attribute should be
retrieved and validated via TIPC_NLA_LINK nesting entry in
tipc_nl_node_get_link().
According to that commit, TIPC_NLA_LINK_NAME value passing via
tipc link get command must follow above hierachy.

Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>