dt-bindings: net: dsa: marvell: add MV88E6361 switch to compatibility list

Marvell MV88E6361 is an 8-port switch derived from the
88E6393X/88E9193X/88E6191X switches family. Since its functional behavior
is very close to switches from this family, it can benefit from existing
drivers for this family, so add it to the list of compatible switches

Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>