DYNAMIC_SENSOR_META should be wake up sensor type

This change is done in AOSP hardware/libhardware and have to be manually
merged into hardware/interfaces after comments are moved to HIDL.

Test: comment change

Change-Id: I8dd5abd0c03eec7ef6bfef107b4b04404144627e
diff --git a/sensors/1.0/types.hal b/sensors/1.0/types.hal
index 552c997..c0d8c5d 100644
--- a/sensors/1.0/types.hal
+++ b/sensors/1.0/types.hal
@@ -596,6 +596,7 @@
     /**
      * DYNAMIC_SENSOR_META
      * trigger-mode: special
+     * wake-up sensor: yes
      *
      * A sensor event of this type is received when a dynamic sensor is added to
      * or removed from the system. At most one sensor of this type can be