i40e: Store lan_vsi_idx and lan_vsi_id in the right size

BugLink: http://bugs.launchpad.net/bugs/1547674

lan_vsi_idx and lan_vsi_id are assigned to u16 data sized variables but
declared in u8. This patch fixes the width of the datatype.

Change-ID: If4bcbcc7d32f2b287c51cb33d17879691258dce2
Signed-off-by: Pandi Kumar Maharajan <pandi.maharajan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from net-next commit 071c859b)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h

@@ -91,8 +91,8 @@ struct i40e_vf {
 	 * When assigned, these will be non-zero, because VSI 0 is always
 	 * the main LAN VSI for the PF.
 	 */
-	u8 lan_vsi_idx;	        /* index into PF struct */
-	u8 lan_vsi_id;		/* ID as used by firmware */
+	u16 lan_vsi_idx;	/* index into PF struct */
+	u16 lan_vsi_id;		/* ID as used by firmware */
 
 	u8 num_queue_pairs;	/* num of qps assigned to VF vsis */
 	u64 num_mdd_events;	/* num of mdd events detected */