net/bnxt: add check for multi host PF per port

net/bnxt: add check for multi host PF per port

Certain SKUs of NIC can support features like NPAR, Multi Host PFs per
port.  We need to check for such features in order to restrict certain
HWRM commands from being sent to the FW.

For the single PF per port model, allow commands like hwrm_port_phy_cfg
from the PF driver. In NPAR and MH environments with multiple PFs per
port, we should not allow HWRM commands like hwrm_port_phy_cfg to be
sent to the FW.

This patch takes care of that.

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>