LU-6142 lnet: SPDX for lnet/include/ and misc files

LU-6142 lnet: SPDX for lnet/include/ and misc files

Convert from verbose license text to SDPX.

Test-Parameters: trivial
Signed-off-by: Timothy Day <timday@amazon.com>
Change-Id: Iad6b111df015cbe524ff0cad9f2a2efc446c2692
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/54251
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>