[CLI to sw_api] Replace SWCFG_*MAC* ioctls.

Notes:
1. print_mac vs. print_mac_list
  - only print_mac_list should be kept, but print_mac is called from swctl using
showmac command (note: showmac should have been replaced by getmac)
2. Test setting static mac only after running trunkvlans for an interface.
3. Implemented del_dynamic_mac in lisa.c

Signed-off-by: Andreea Hodea <hodea_andreea@yahoo.com>