package/tcllib: update license to SPDX format
While at it add the license file hash.
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 2c82d7c605e53d3687ff63f31e135ec7ce92ea05)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>