netcat: prevent build system from adding a prefix to binaries

Fixes bug #2239.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/netcat/netcat.mk

@@ -10,5 +10,6 @@ NETCAT_SITE=http://$(BR2_SOURCEFORGE_MIRROR).dl.sourceforge.net/sourceforge/netc
 NETCAT_AUTORECONF:=NO
 NETCAT_INSTALL_STAGING:=NO
 NETCAT_INSTALL_TARGET:=YES
+NETCAT_CONF_OPT = --program-prefix=''
 
 $(eval $(call AUTOTARGETS,package,netcat))