thermal-hal: restart thermal hal service

When thermal hal service first boots up, it can not parse some
thermal zones' type from drivers' sysfs, like power supply,
because these establish later than thermal hal service. So
restart service and ensure that it can initialize successfully.

Change-Id: Ie737174445ed216d79a976e8e4b68719064e9066
diff --git a/android.hardware.thermal@2.0-service.qti-v2.rc b/android.hardware.thermal@2.0-service.qti-v2.rc
index bfe8d3a..a1100b6 100644
--- a/android.hardware.thermal@2.0-service.qti-v2.rc
+++ b/android.hardware.thermal@2.0-service.qti-v2.rc
@@ -32,3 +32,7 @@
 	class hal
 	user root
 	group root
+
+on boot
+    wait /sys/kernel/boot_adsp/boot
+    restart android.thermal-hal