fm10k: consistently refer to VLANs and VLAN IDs

fm10k: consistently refer to VLANs and VLAN IDs

BugLink: http://bugs.launchpad.net/bugs/1536475
Instead of using lowercase vlan, vid, or VID, always use VLAN or VLAN ID
in comments when referring to VLANs. The original driver code was
consistent, but recent patches have not been as consistent with this
naming scheme.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit aa502b4a2425a269787fbe2c3a91054d5e648a64)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>