package/tcl: 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 8fa4e9792917ae6beb2782ea5938cc4cf0d3f1e7)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/tcl/tcl.hash

@@ -1,2 +1,3 @@
 # Locally calculated
 sha256 a265409781e4b3edcc4ef822533071b34c3dc6790b893963809b9fe221befe07  tcl8.6.6-src.tar.gz
+sha256 c0a69a2bfd757361ec7e6143973b103c90409316b49e9c88db26ad6388e79f16  license.terms

package/tcl/tcl.mk

@@ -8,7 +8,7 @@ TCL_VERSION_MAJOR = 8.6
 TCL_VERSION = $(TCL_VERSION_MAJOR).6
 TCL_SOURCE = tcl$(TCL_VERSION)-src.tar.gz
 TCL_SITE = http://downloads.sourceforge.net/project/tcl/Tcl/$(TCL_VERSION)
-TCL_LICENSE = tcl license
+TCL_LICENSE = TCL
 TCL_LICENSE_FILES = license.terms
 TCL_SUBDIR = unix
 TCL_INSTALL_STAGING = YES