flashcard: Fix kernel panic

Change-Id: I737ba5ca5a79eca976cf2fdd5d5419d4e2e1aa96
diff --git a/flashcard/init b/flashcard/init
index d785b81..429f69b 100755
--- a/flashcard/init
+++ b/flashcard/init
@@ -62,4 +62,4 @@
 log "Board will power down in 10 seconds..."
 sleep 10
 poweroff
-
+sleep 100000