lm-sensors: add init script

"sensors -s" needs to happen at boot-time so that any "set"
statements in sensors.conf file can take effect.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

utils/lm-sensors/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=lm-sensors
 PKG_VERSION:=3.3.5
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/groeck/lm-sensors.git
@@ -101,6 +101,8 @@ ifeq ($(ARCH),i386)
 	$(INSTALL_DIR) $(1)/etc
 	$(INSTALL_CONF) ./files/sensors.conf $(1)/etc/sensors.conf
 endif
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/lm-sensors.init $(1)/etc/init.d/lm-sensors
 endef
 
 define Package/lm-sensors-detect/install

utils/lm-sensors/files/lm-sensors.init

@@ -0,0 +1,14 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2017 Philip Prindeville, Redfish Solutions LLC
+
+START=28
+STOP=
+
+PROG=/usr/sbin/sensors
+
+start() {
+	[ -f /etc/sensors.conf -o -f /etc/sensors3.conf ] || return
+
+	$PROG -s
+}
+