motion: add basic procd init script

Disable the init script by default to avoid log pollution; motion is
very verbose when it cannot open the configured camera.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
(cherry-picked from eaa1d5aa18)

multimedia/motion/files/motion.init

@@ -0,0 +1,22 @@
+#!/bin/sh /etc/rc.common
+
+START=94
+USE_PROCD=1
+
+PROG="/usr/bin/motion"
+CONF="/etc/motion.conf"
+
+start_service() {
+	local enabled
+
+	config_load "motion"
+	config_get_bool enabled "general" "enabled" 0
+	[ "$enabled" -gt 0 ] || return 1
+
+	procd_open_instance
+
+	procd_set_param command "$PROG"
+	procd_append_param command -c "$CONF"
+
+	procd_close_instance
+}