Wifi: Add 6GHz band to NAN structures and methods

This commit adds 6GHz band to NAN related structures and methods.

Bug: 139354972
Test: Manual
Test: VTS test
Test: Unit test:
Test: ./hardware/interfaces/wifi/1.4/default/tests/runtests.sh
Change-Id: I33f63fde67d5a839678076fdb7c76d5eb8645131
diff --git a/wifi/1.4/Android.bp b/wifi/1.4/Android.bp
index e63b1eb..b443230 100644
--- a/wifi/1.4/Android.bp
+++ b/wifi/1.4/Android.bp
@@ -12,6 +12,7 @@
         "IWifiApIface.hal",
         "IWifiChip.hal",
         "IWifiChipEventCallback.hal",
+        "IWifiNanIface.hal",
         "IWifiRttController.hal",
         "IWifiRttControllerEventCallback.hal",
         "IWifiStaIface.hal",