net/bnxt: fix single PF per port check

net/bnxt: fix single PF per port check

The check BNXT_SINGLE_PF(bp) returns false for a VF. So there is no
extra check needed for VF along with BNXT_SINGLE_PF(bp).

Also make error messages more explicit.

Fixes: ff947c6ce15f ("net/bnxt: add check for multi host PF per port")
Fixes: f86febfb46da ("net/bnxt: support VF")
Fixes: 3e12fdb78e82 ("net/bnxt: support VLAN pvid")
Cc: stable@dpdk.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>