qosmngr: Dynamically allocate uplink bandwidth on Airoha.
In order for the QoS engine to know how much bandwidth the uplink has got we need to set this with 'qosrule' every time the uplink changes. Otherwise SP scheduling will fail. For some reason 95% of the bandwidth seems to be a good value in our tests. Then SP works as expected.
This fix takes into account when ae_wan is used by ethernet, fiber and when PON is used as the uplink.