net/ice: complete VLAN offload capability for DCF

net/ice: complete VLAN offload capability for DCF

The new VLAN virtchnl opcodes introduce new capabilities like VLAN
filtering, stripping and insertion.

The DCF needs to query the VLAN capabilities based on current device
configuration firstly.

DCF is able to configure inner VLAN filter when port VLAN is enabled
base on negotiation; and DCF is able to configure outer VLAN (0x8100)
if port VLAN is disabled to be compatible with legacy mode.

When port VLAN is updated by DCF, the DCF needs to reset to query the
new VLAN capabilities.

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
Signed-off-by: Kevin Liu <kevinx.liu@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>