qcacld-3.0: Do not update multicast counters when unicast packet is received
Currently both unicast and multicast counters are updated
when unicast packet is received if a multicast IP packet
is sent using a unicast MAC address.
Fix is to not update multicast counters when unicast packet is
received.
Change-Id: I6907a0cf51525af1ba6fb7e7be472eff72aaa779
CRs-Fixed: 2052905