healthd: charger: fix check for charger connected to enter suspend

Logic for this check was inadvertently reversed when porting this from
the charger daemon to healthd.  Request suspend if a charegr is connected,
else stay out of suspend waiting for a charger connect or power off if
none.

Bug: 17112463
Change-Id: Iffdb6dbcd0d0a2a614ff8f50bf5f2e22e1ad552f
diff --git a/healthd/healthd_mode_charger.cpp b/healthd/healthd_mode_charger.cpp
index 67d4944..345f354 100644
--- a/healthd/healthd_mode_charger.cpp
+++ b/healthd/healthd_mode_charger.cpp
@@ -383,7 +383,7 @@
         charger->next_screen_transition = -1;
         gr_fb_blank(true);
         LOGV("[%" PRId64 "] animation done\n", now);
-        if (!charger->charger_connected)
+        if (charger->charger_connected)
             request_suspend(true);
         return;
     }