qcacld-3.0: Do not invoke gratuitous_arp_unsolicited_na API

Do not invoke cfg80211_is_gratuitous_arp_unsolicited_na API
for kernel version greater than 4.6 because the functionality
is implemented at higher layer in TCP/IP stack.

Change-Id: I0b04b44b9fa9961bd917edbe09396546392c08bc
CRs-Fixed: 2390950
1 file changed