motion: reenable double tap in S5.

Double TAP must be enabled in S5, even if it has been disabled by the
AP, otherwise we would not be able to check the battery level if the AP
did not shutdown properly or does not reenable double tap on shutdown.

BRANCH=none
BUG=chrome-os-partner:46572
TEST=Check double tap is working after unit has been powered down.

Change-Id: Ic798399a3e4ae4d87c6e80eab4cf1fd680f99585
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/306697
Reviewed-by: Alec Berg <alecaberg@chromium.org>

common/motion_sense.c

@@ -420,6 +420,9 @@ static void motion_sense_shutdown(void)
 			int activity = get_next_bit(&enabled);
 			sensor->drv->manage_activity(sensor, activity, 0, NULL);
 		}
+		/* Renable double tap in case AP disabled it */
+		sensor->drv->manage_activity(sensor,
+				MOTIONSENSE_ACTIVITY_DOUBLE_TAP, 1, NULL);
 	}
 #endif
 }