iwlwifi: remove CMD_SYNC

CMD_SYNC is really 0 which is confusing:

if (cmd.flags & CMD_SYNC) is always false.
Fix this by simply removing its definition.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/dvm/debugfs.c b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
index d2fe259..0ffb6ff 100644
--- a/drivers/net/wireless/iwlwifi/dvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
@@ -1481,7 +1481,7 @@
 
 	/* make request to uCode to retrieve statistics information */
 	mutex_lock(&priv->mutex);
-	ret = iwl_send_statistics_request(priv, CMD_SYNC, false);
+	ret = iwl_send_statistics_request(priv, 0, false);
 	mutex_unlock(&priv->mutex);
 
 	if (ret)
@@ -1868,7 +1868,7 @@
 
 	/* make request to uCode to retrieve statistics information */
 	mutex_lock(&priv->mutex);
-	iwl_send_statistics_request(priv, CMD_SYNC, true);
+	iwl_send_statistics_request(priv, 0, true);
 	mutex_unlock(&priv->mutex);
 
 	return count;
@@ -2188,7 +2188,6 @@
 	struct iwl_host_cmd cmd = {
 		.id = REPLY_ECHO,
 		.len = { 0 },
-		.flags = CMD_SYNC,
 	};
 
 	ret = iwl_dvm_send_cmd(priv, &cmd);
@@ -2320,7 +2319,7 @@
 	mutex_lock(&priv->mutex);
 
 	/* take the return value to make compiler happy - it will fail anyway */
-	ret = iwl_dvm_send_cmd_pdu(priv, REPLY_ERROR, CMD_SYNC, 0, NULL);
+	ret = iwl_dvm_send_cmd_pdu(priv, REPLY_ERROR, 0, 0, NULL);
 
 	mutex_unlock(&priv->mutex);