nbd: add license information

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/nbd/nbd.mk

@@ -9,6 +9,7 @@ NBD_SOURCE = nbd-$(NBD_VERSION).tar.bz2
 NBD_SITE = http://downloads.sourceforge.net/project/nbd/nbd/$(NBD_VERSION)
 NBD_CONF_OPT = $(if $(BR2_LARGEFILE),--enable-lfs,--disable-lfs)
 NBD_DEPENDENCIES = libglib2
+NBD_LICENSE = GPLv2
 
 ifeq ($(BR2_TOOLCHAIN_BUILDROOT)$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC)$(BR2_TOOLCHAIN_CTNG_uClibc),y)
 # We have linux/falloc.h