[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>
diff --git a/Makefile b/Makefile
index a202277..4173efd 100644
--- a/Makefile
+++ b/Makefile
@@ -52,7 +52,8 @@
 			nss_data_plane.o \
 			nss_log.o \
 			nss_wifi.o \
-			nss_wifi_vdev.o
+			nss_wifi_vdev.o \
+			nss_wifi_if.o
 
 #
 # TODO: Deprecated files should be removed before merge