monitor: Add notification handling for PLCA configuration

Physical Layer Collision Avoindance (PLCA) has configuration and status
netlink commands (PLCA_GET/SET_CFG and PLCA_GET_STATUS).

The PLCA_xxx_CFG commands generate notifications, allow monitoring them.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
2 files changed