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On CHIPSET_SHUTDOWN set the idle_action to deep sleep. If sleep is enabled it will go into deep sleep. If not it will wait until sleep is sleep is enabled. This change also sets the idle_action to IDLE_DEFAULT when resuming from deep sleep or during init. Before cr50 kept track of the previous idle state in a PWRDN register and then used that state during the next resume. If we went into deep sleep, on resume we want the idle action to be reset to sleep and then only enter deep sleep if we have detected the AP is off. BUG=chrome-os-partner:56100 BUG=chrome-os-partner:55747 BRANCH=none TEST=manual run 'poweroff' on the AP and see that cr50 enables deep sleep verify that even if the ap is powered off it doesn't prevent ccd from working and when suzyq is unplugged cr50 will go into deep sleep After running poweroff on the AP wait a while and run powerbtn on the EC. Verify the system can boot up fully without going into recovery. Do this on gru and reef. Change-Id: I07f5a9d85dd0467cd22e499d4261c75caf653563 Signed-off-by: Mary Ruthven <mruthven@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/373139 Reviewed-by: Bill Richardson <wfrichar@chromium.org>