libcap-ng: annotate licenses with components

libcap-ng.so library is released under LGPLv2.1+ and programs testcap,
filecap, netcap and pscap are released under GPLv2+.

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

package/libcap-ng/libcap-ng.mk

@@ -6,7 +6,7 @@
 
 LIBCAP_NG_VERSION = 0.7.8
 LIBCAP_NG_SITE = http://people.redhat.com/sgrubb/libcap-ng
-LIBCAP_NG_LICENSE = GPLv2+ LGPLv2.1+
+LIBCAP_NG_LICENSE = GPLv2+ (programs), LGPLv2.1+ (library)
 LIBCAP_NG_LICENSE_FILES = COPYING COPYING.LIB
 LIBCAP_NG_INSTALL_STAGING = YES