package/netsniff-ng: disable geoip and zlib if neeeded

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
(cherry picked from commit fd0883ba2107add7b2b987195c5abfbcc86117bf)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/netsniff-ng/netsniff-ng.mk

@@ -27,6 +27,8 @@ endif
 
 ifeq ($(BR2_PACKAGE_GEOIP),y)
 NETSNIFF_NG_DEPENDENCIES += geoip
+else
+NETSNIFF_NG_CONF_OPTS += --disable-geoip
 endif
 
 ifeq ($(BR2_PACKAGE_LIBNL),y)
@@ -41,6 +43,8 @@ endif
 
 ifeq ($(BR2_PACKAGE_ZLIB),y)
 NETSNIFF_NG_DEPENDENCIES += zlib
+else
+NETSNIFF_NG_CONF_OPTS += --disable-zlib
 endif
 
 # hand-written configure script and makefile