This commit adds the statistics for multicast wakelocks (count/time) in dump of battery-stats. This enables debugging of power issues due to extensive wakeup of host processor due to arrival of multicast packets, and help identify the blamed application Bug: 33649966 Test: Manual Test Change-Id: I882f945dd36fa2881c59776b4954017bf3c76cd7 Signed-off-by: Ahmed ElArabawy <arabawy@google.com>