Rather than manually including the include directory for LinuxKPI
use the provided macro.  Before there was no -I for the dummy
directory and as files synced from Linux under a permissive license
may include them the build would fail.  overflow.h will include
linux/const.h which only exists as a dummy header at this point
on FreeBSD.

Sponsored by:	The FreeBSD Foundation
Fixes:		35b53f8c989f6
MFC after:	3 days
Reviewed by:	emaste
Differential Revision: https://reviews.freebsd.org/D56424

This is a residual of the $FreeBSD$ removal.

MFC After: 3 days (though I'll just run the command on the branches)
Sponsored by: Netflix

LINT includes bnxt_re driver. Adjust the path in files, add missing
files and add a new BNXT_C to build (which thinly wraps OFED version
with bnxt specicif stuff).

Sponsored by:		Netflix
Fixes: acd884dec99a ("RDMA/bnxt_re: Add bnxt_re RoCE driver")

Fixes:	35b53f8c989f ("bnxt_en: Add PFC, ETS & App TLVs protocols support")

Reviewed by:            imp
Approved by:            imp
Differential revision:  https://reviews.freebsd.org/D45202

This patch introduces the RoCE driver for the
Broadcom NetXtreme-E 10/25/50/100/200G RoCE HCAs.

The RoCE driver is a two part driver that relies
on the bnxt_en NIC driver to operate. The changes
needed in the bnxt_en driver is included through
another patch "L2-RoCE driver communication interface"
in this set.

Presently, There is no user space support, Hence
recommendation to use the krping kernel module for
testing. User space support will be incorporated in
subsequent patch submissions.

Reviewed by:            imp
Approved by:            imp
Differential revision:  https://reviews.freebsd.org/D45011

- Added Aux bus support for RoCE.
- Implemented the ulp ops that are required by RoCE driver.
- Restructure context memory data structures
- DBR pacing support

Reviewed by:            imp
Approved by:            imp
Differential revision:  https://reviews.freebsd.org/D45006

Created new directory "bnxt_en" in /dev/bnxt and /modules/bnxt
and moved source files and Makefile into respective directory.

ETS support:

   - Added new files bnxt_dcb.c & bnxt_dcb.h
   - Added sysctl node 'dcb' and created handlers 'ets' and
     'dcbx_cap'
   - Add logic to validate user input and configure ETS in
     the firmware
   - Updated makefile to include bnxt_dcb.c & bnxt_dcb.h

PFC support:

   - Created sysctl handlers 'pfc' under node 'dcb'
   - Added logic to validate user input and configure PFC in
     the firmware.

App TLV support:

   - Created 3 new sysctl handlers under node 'dcb'
       - set_apptlv (write only): Sets a specified TLV
       - del_apptlv (write only): Deletes a specified TLV
       - list_apptlv (read only): Lists all APP TLVs configured
   - Added logic to validate user input and configure APP TLVs
     in the firmware.

Added Below DCB ops for management interface:

   - Set PFC, Get PFC, Set ETS, Get ETS, Add App_TLV, Del App_TLV
     Lst App_TLV

Reviewed by:            imp
Approved by:            imp
Differential revision:  https://reviews.freebsd.org/D45005

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Added support for application management interface. There are two types of commands supported:

1. Firmware IOCTLs: These ioctls are meant for firmware
   consumption. Driver acts as a transport for these.
2. 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