sysprof: add license information

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/sysprof/sysprof.mk

@@ -7,6 +7,8 @@
 SYSPROF_VERSION = 1.2.0
 SYSPROF_SITE = http://sysprof.com
 SYSPROF_DEPENDENCIES = libglib2
+SYSPROF_LICENSE = GPLv2+
+SYSPROF_LICENSE_FILES = COPYING
 
 ifeq ($(BR2_PACKAGE_SYSPROF_GUI),y)
 SYSPROF_DEPENDENCIES += libgtk2 libglade gdk-pixbuf