Originally, when the Rust upstream `alloc` standard library crate was
vendored in commit 057b8d2571 ("rust: adapt `alloc` crate to the
kernel"), the SPDX License Identifiers were added to every file so that
the license on those was clear.
Thus do the same for the `syn` crate.
This makes `scripts/spdxcheck.py` pass.
Reviewed-by: Gary Guo <[email protected]>
Tested-by: Gary Guo <[email protected]>
Tested-by: Jesung Yang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Miguel Ojeda <[email protected]>