axolotl: decrease shutdown wait time from 2s to 500ms

This delays shutting down unnecessarily.

Change-Id: Ie13af2b161866e3eef9b7cd03cced47c8b1cfbf9
Signed-off-by: Alexander Martinz <amartinz@shiftphones.com>
diff --git a/product.prop b/product.prop
index c7e582e..36a301e 100644
--- a/product.prop
+++ b/product.prop
@@ -21,4 +21,4 @@
 ro.sys.cp_msleeptime=30000
 
 # Vendor
-sys.vendor.shutdown.waittime=2000
+sys.vendor.shutdown.waittime=500