qcacmn: Added a member in qca_napi_info structure

To derive hif_ctx from napi pointer. This changes helps enable napi support
for WIN driver.

Change-Id: Idcb0775195665d60d4b1a9a010afcfab256d839f
Acked-by: Balamurugan Mahalingam <bmahalin@codeaurora.org>

hif/inc/hif.h

@@ -126,6 +126,7 @@ struct qca_napi_stat {
  */
 struct qca_napi_info {
 	struct net_device    netdev; /* dummy net_dev */
+	void 		     *hif_ctx;
 	struct napi_struct   napi;    /* one NAPI Instance per CE in phase I */
 	uint8_t              scale;   /* currently same on all instances */
 	uint8_t              id;