net/ice/base: support checking double VLAN mode

net/ice/base: support checking double VLAN mode

If a driver wants to configure double VLAN mode (DVM) it needs to
first check if the DDP supports DVM. To do this the driver needs to read
the package metadata section via the upload section AQ (0x04C1).

If the DDP doesn't support configuring double VLAN mode (DVM), then
there is nothing to do regarding configuring the VLAN mode of the
device.

The set_svm() or set_dvm() ops should only be called if the current
configuration supports configuring the VLAN mode of the device.

Suggested-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Dan Nowlin <dan.nowlin@intel.com>
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Qiming Yang <qiming.yang@intel.com>