[qca-nss-drv] add support for vlan configuration

Enables sending of configuration messages to vlan dynamic interface
in NSS. This includes messages such as assign vsi/unassign vsi/add tag
/set mtu/set mac_addr.

Change-Id: Ie5b15b1512bc34f8a190d8aaa8c72459686c39fd
Signed-off-by: Stephen Wang <wstephen@codeaurora.org>
7 files changed