net/qede: refactoring vport handling code

net/qede: refactoring vport handling code

The refactoring is mainly for two reasons:

- To remove an additional layer of internal callbacks for all vport
  related operations from the struct qed_eth_ops_pass. Instead, we
  can invoke base APIs directly.

- Splitting a single large vport-update configuration into multiple and
  independent vport-update operations. Each configuration would touch
  only the required config bits that needs an update.

Signed-off-by: Harish Patil <harish.patil@cavium.com>