[qca-nss-drv] Implement nss_wifi_if interface to handle native wifi

Implement a new dedicated interface nss_wifi_if to handle native wifi
packets. We will continue to use virt_if for 802.3 packets from wifi.

Change-Id: Ia2534ed42a30c28a18bbbaca873f825b1ac19103
Signed-off-by: Sundarajan Srinivasan <sundaraj@codeaurora.org>
8 files changed