ifplugd: add --with-initdir= to config command

ifplugd refuses to configure without this set.

Signed-off-by: Shawn J. Goff <shawnjgoff@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/ifplugd/ifplugd.mk

@@ -12,7 +12,7 @@ IFPLUGD_AUTORECONF = YES
 
 # install-strip unconditionally overwrites $(TARGET_DIR)/etc/ifplugd/ifplugd.*
 IFPLUGD_INSTALL_TARGET_OPT = DESTDIR=$(TARGET_DIR) install-exec
-IFPLUGD_CONF_OPT = --disable-lynx
+IFPLUGD_CONF_OPT = --disable-lynx --with-initdir=/etc/init.d/
 IFPLUGD_DEPENDENCIES = libdaemon
 
 # Prefer big ifplugd