Replace proprietary licenes with Apache 2.0 or other compatible license, if possible

[jafingerhut]

$ git clone https://github.com/p4lang/tdi

$ git log -n 1 | head -n 3
commit 1abebddc55ecc163a19bcb12d4e878ffea60b73c
Author: ruchitg <ruchit.gupta@intel.com>
Date:   Mon Jul 22 12:24:36 2024 +0530

$ find . \! -type d | xargs grep -i proprietary
./src/targets/dummy/tdi_dummy_table.hpp: * BAREFOOT NETWORKS CONFIDENTIAL & PROPRIETARY
./src/targets/dummy/tdi_dummy_table.hpp: * technical concepts contained herein are proprietary to Barefoot Networks,

$ find . \! -type d | xargs grep -i confidential
./src/targets/dummy/tdi_dummy_table.hpp: * BAREFOOT NETWORKS CONFIDENTIAL & PROPRIETARY

For these files, and ideally all source files in this repository that are released under and Apache 2.0 license, please add a comment line near the beginning of the file with exactly this text in it (plus any characters required to make it a comment):

SPDX-License-Identifier: Apache-2.0

[jafingerhut]

@saynb You made the commit that contains the proprietary license, so pinging you in hopes that you know, or can find out, whether that file can be relicensed to Apache 2.0.

@satish153 @swaroopsarma Pinging you since you have made many commits to this repository.

[jafingerhut]

Closing this issue, as it is fixed after this PR was merged: #139