qcacmn: Restrict the tx descriptors for low mem config

For low mem config, use user configured max tx descriptors to limit the
allocation of software tx descriptors.

Use dp_txrx_pflow_update_pdev_params function to print stats and to update
pdev param.

Change-Id: I8fa6f0bb8841de68e8dc205ffcb0fde264f1b0e0
CRs-Fixed: 2414452
diff --git a/wlan_cfg/cfg_dp.h b/wlan_cfg/cfg_dp.h
index 315b32a..4e0198d 100644
--- a/wlan_cfg/cfg_dp.h
+++ b/wlan_cfg/cfg_dp.h
@@ -143,7 +143,7 @@
 #define WLAN_CFG_TX_COMP_RING_SIZE_MAX 0x80000
 
 #define WLAN_CFG_NUM_TX_DESC_MIN  1024
-#define WLAN_CFG_NUM_TX_DESC_MAX  0x320000
+#define WLAN_CFG_NUM_TX_DESC_MAX  32768
 
 #define WLAN_CFG_NUM_TX_EXT_DESC_MIN  1024
 #define WLAN_CFG_NUM_TX_EXT_DESC_MAX  0x80000