qca-wifi: Set the default max descs to appropriate value

Set the default max descs to appropriate value, as this will
be used in case there is no value is set explicitly from
ini file

Change-Id: I2011f47ebd3dbdb9a1501364c02747206577d282

configs/wlan_cfg/ap_wlan_cfg.config

@@ -25,7 +25,7 @@ EXTRA_CFLAGS += -DWLAN_CFG_MAC_PER_TARGET=3
 ifeq ($(strip ${CONFIG_WIFI_EMULATION_WIFI_3_0}),1)
 EXTRA_CFLAGS += -DWLAN_CFG_NUM_TX_DESC=0x2000
 else
-EXTRA_CFLAGS += -DWLAN_CFG_NUM_TX_DESC=0x320000
+EXTRA_CFLAGS += -DWLAN_CFG_NUM_TX_DESC=0x8000
 endif
 
 ifeq ($(strip ${NO_RX_PKT_HDR_TLV}),1)