qcacld-3.0: Merge NAN related Target IF files into CLD

NAN component is not needed in the CMN repo. To reduce the
unnecessary lines of code, merge the NAN related Target IF
files from CMN into CLD. Subsequently remove these files
from the CMN repo.

Merge NAN related Target IF files from CMN into CLD.

Change-Id: I02475f1e1a3a90280bb9da0f131ba34bb189f5b3

inc/target_if_nan.h → components/target_if/nan/inc/target_if_nan.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the