openocd: add license information

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

package/openocd/openocd.mk

@@ -7,6 +7,8 @@
 OPENOCD_VERSION = 0.5.0
 OPENOCD_SOURCE = openocd-$(OPENOCD_VERSION).tar.bz2
 OPENOCD_SITE = http://downloads.sourceforge.net/project/openocd/openocd/$(OPENOCD_VERSION)
+OPENOCD_LICENSE = GPLv2+
+OPENOCD_LICENSE_FILES = COPYING
 
 OPENOCD_AUTORECONF = YES
 OPENOCD_CONF_OPT = \