net/bnxt: fix usage of vnic id

net/bnxt: fix usage of vnic id

VNIC ID returned by the FW is a 16-bit field.
We are incorrectly using it as a 32-bit value in few places.
This patch corrects that.

Fixes: daef48efe5e5 ("net/bnxt: support set MTU")
Cc: stable@dpdk.org
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Reviewed-by: Michael Wildt <michael.wildt@broadcom.com>
Reviewed-by: Randy Schacher <stuart.schacher@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>