qcacmn: Change to avoid compilation issue HK2.0

EWMA macros which were used for sojourn stats
time delay calculation, causing compilation issue
for x86 platform as x86 platform is on kernel
version less than 4.3 and EWMA macros were
introduced after that version.

Change-Id: I184844c7df8e5b317a095355c2f6a9af9e4747ff
CRs-Fixed: 2308338

qdf/inc/qdf_util.h

@@ -109,18 +109,18 @@ typedef __qdf_wait_queue_head_t qdf_wait_queue_head_t;
 	 (_a)[5] == 0xff)
 
 #define QDF_DECLARE_EWMA(name, factor, weight) \
-	_QDF_DECLARE_EWMA(name, factor, weight)
+	__QDF_DECLARE_EWMA(name, factor, weight)
 
-#define qdf_ewma_tx_lag _qdf_ewma_tx_lag
+#define qdf_ewma_tx_lag __qdf_ewma_tx_lag
 
 #define qdf_ewma_tx_lag_init(tx_lag) \
-	 _qdf_ewma_tx_lag_init(tx_lag)
+	__qdf_ewma_tx_lag_init(tx_lag)
 
 #define qdf_ewma_tx_lag_add(tx_lag, value) \
-	 _qdf_ewma_tx_lag_add(tx_lag, value)
+	__qdf_ewma_tx_lag_add(tx_lag, value)
 
 #define qdf_ewma_tx_lag_read(tx_lag) \
-	 _qdf_ewma_tx_lag_read(tx_lag)
+	 __qdf_ewma_tx_lag_read(tx_lag)
 
 /**
  * qdf_status_to_os_return - returns the status to OS.