rslib: Add SPDX identifiers

The Reed-Solomon library is based on code from Phil Karn who granted
permission to import it into the kernel under the GPL V2.

See commit 15b5423757a7 ("Shared Reed-Solomon ECC library") in the history
git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git

  ...
  The encoder/decoder code is lifted from the GPL'd userspace RS-library
  written by Phil Karn. I modified/wrapped it to provide the different
  functions which we need in the MTD/NAND code.
  ...
  Signed-Off-By: Thomas Gleixner <[email protected]>
  Signed-Off-By: David Woodhouse <[email protected]>
  "No objections at all. Just keep the authorship notices." -- Phil Karn

Add the proper SPDX identifiers according to
Documentation/process/license-rules.rst.

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Cc: Boris Brezillon <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Segher Boessenkool <[email protected]>
Cc: Kernel Hardening <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: Mike Snitzer <[email protected]>
Cc: Anton Vorontsov <[email protected]>
Cc: Colin Cross <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Alasdair Kergon <[email protected]>
Signed-off-by: Kees Cook <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/rslib.h b/include/linux/rslib.h
index a596abaf2e56..7ace7eec3028 100644
--- a/include/linux/rslib.h
+++ b/include/linux/rslib.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Generic Reed Solomon encoder / decoder library
  *