net: dsa: lan9303: Added Documentation/networking/dsa/lan9303.txt

Provide a rough overview of the state of the driver. And explain that the
driver operates in two modes: bridged and port-separated.

Signed-off-by: Egil Hjelmeland <egil.hjelmeland@zenitel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Egil Hjelmeland 2017-11-02 10:20:58 +01:00 • committed by David S. Miller
commit b35be41549