ath10k: enable neighbor solicitation offload in wow suspend

In IPV6 the neighbor solicitations are used by nodes to determine
the link layer address of a neighbor and neighbor advertisements
are used by nodes to respond to a neighbor solicitation message.

During WOW suspend offload the neighbor solicitation packet handling
method to WLAN firmware, this adds support to prevent the device
wakeup by neighbor solicitation packet.

CRs-Fixed: 2217590
Change-Id: I5d860e6651b7c62223d9d00886fc386dcf647cab
Signed-off-by: Sarada Prasanna Garnayak <sgarna@codeaurora.org>