qcacmn: Add global context

Global context will contain fst context, fst ref count
and global desc count.

Change-Id: I272fa2c3b8945822268d29b6c329df3f659753d4
CRs-Fixed: 3392039

dp/wifi3.0/dp_internal.h

@@ -2611,7 +2611,7 @@ dp_print_pdev_rx_stats(struct dp_pdev *pdev);
  */
 void dp_print_soc_tx_stats(struct dp_soc *soc);
 
-#ifdef QCA_SUPPORT_GLOBAL_DESC
+#ifdef QCA_SUPPORT_DP_GLOBAL_CTX
 /**
  * dp_print_global_desc_count(): Print global desc in use
  *