if_bnxt: Added support for mgmt interface for passthrough hwrms
Added support for application management interface. There are two types of commands supported:
- Firmware IOCTLs: These ioctls are meant for firmware consumption. Driver acts as a transport for these.
- Driver only IOCTLs: These ioctls are meant for driver consumption. Driver will serve these ioctls without sending them down to firmware.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D36448