Import and update p910nd package

Signed-off-by: Philipp Kerling <pkerling@casix.org>

net/p910nd/files/p910nd.config

@@ -0,0 +1,5 @@
+config p910nd
+	option device        /dev/usb/lp0
+	option port          0
+	option bidirectional 1
+	option enabled       0

net/p910nd/files/p910nd.init

@@ -0,0 +1,51 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2007 OpenWrt.org
+START=50
+
+append_bool() {
+	local section="$1"
+	local option="$2"
+	local value="$3"
+	local _val
+	config_get_bool _val "$section" "$option" '0'
+	[ "$_val" -gt 0 ] && append args "$3"
+}
+
+append_string() {
+	local section="$1"
+	local option="$2"
+	local value="$3"
+	local _val
+	config_get _val "$section" "$option"
+	[ -n "$_val" ] && append args "$3$_val"
+}
+
+start_service() {
+	local section="$1"
+	args=""
+
+	append_bool "$section" bidirectional "-b"
+	append_string "$section" device "-f "
+	append_string "$section" bind "-i "
+	append_string "$section" port ""
+	config_get_bool "enabled" "$section" "enabled" '1'
+	[ "$enabled" -gt 0 ] && /usr/sbin/p910nd $args
+}
+
+stop_service() {
+	local section="$1"
+	config_get port "$section" port
+
+	PID_F=/var/run/p910${port}d.pid
+	[ -f $PID_F ] && kill $(cat $PID_F)
+}
+
+start() {
+	config_load "p910nd"
+	config_foreach start_service p910nd
+}
+
+stop() {
+	config_load "p910nd"
+	config_foreach stop_service p910nd
+}