MAINTAINERS: Add dedicated entries for phy_link_topology

The infrastructure to handle multi-phy devices is fairly standalone.
Add myself as maintainer for that part as well as the netlink uAPI
that exposes it.

Reviewed-by: Andrew Lunn <[email protected]>
Acked-by: Jakub Kicinski <[email protected]>
Signed-off-by: Maxime Chevallier <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: minimaxwell

MAINTAINERS

@@ -16577,6 +16577,13 @@ F:	net/ethtool/mm.c
 F:	tools/testing/selftests/drivers/net/hw/ethtool_mm.sh
 K:	ethtool_mm
 
+NETWORKING [ETHTOOL PHY TOPOLOGY]
+M:	Maxime Chevallier <[email protected]>
+F:	Documentation/networking/phy-link-topology.rst
+F:	drivers/net/phy/phy_link_topology.c
+F:	include/linux/phy_link_topology.h
+F:	net/ethtool/phy.c
+
 NETWORKING [GENERAL]
 M:	"David S. Miller" <[email protected]>
 M:	Eric Dumazet <[email protected]>