qcacmn: Datapath init-deinit changes

Do a logical split of dp_soc_attach and
dp_pdev_attach into Allocation and initialization
and dp_soc_detach and dp_pdev_detach into
de-initialization and free routines

Change-Id: I23bdca0ca86db42a4d0b2554cd60d99bb207a647

dp/wifi3.0/dp_htt.h

@@ -63,6 +63,8 @@ int htt_wbm_event_record(struct htt_logger *h, uint8_t tx_status,
 
 #endif
 
+void htt_htc_pkt_pool_free(struct htt_soc *soc);
+
 #define HTT_TX_MUTEX_TYPE qdf_spinlock_t
 
 #define HTT_TX_MUTEX_INIT(_mutex)				\