libtasn1: clarify licensing info

The library is LGPLv2.1+, the tests and tools are GPLv3+ so clarify to
avoid confusion.

Signed-off-by: Gustavo Zacarias <gustavo.zacarias@free-electrons.com>
Reviewed-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libtasn1/libtasn1.mk

@@ -7,7 +7,7 @@
 LIBTASN1_VERSION = 4.9
 LIBTASN1_SITE = http://ftp.gnu.org/gnu/libtasn1
 LIBTASN1_DEPENDENCIES = host-bison
-LIBTASN1_LICENSE = GPLv3+, LGPLv2.1+
+LIBTASN1_LICENSE = GPLv3+ (tests, tools), LGPLv2.1+ (library)
 LIBTASN1_LICENSE_FILES = COPYING COPYING.LIB
 LIBTASN1_INSTALL_STAGING = YES
 # 'missing' fallback logic botched so disable it completely