wl18xx/wl12xx: defines for Tx/Rx descriptors num

Use defines for number of Tx/Rx descriptors.
Signed-off-by: Igal Chernobelsky <igalc@ti.com>
Signed-off-by: Luciano Coelho <luca@coelho.fi>

drivers/net/wireless/ti/wl12xx/main.c

@@ -1641,8 +1641,8 @@ static int __devinit wl12xx_probe(struct platform_device *pdev)
 	wl->ops = &wl12xx_ops;
 	wl->ptable = wl12xx_ptable;
 	wl->rtable = wl12xx_rtable;
-	wl->num_tx_desc = 16;
-	wl->num_rx_desc = 8;
+	wl->num_tx_desc = WL12XX_NUM_TX_DESCRIPTORS;
+	wl->num_rx_desc = WL12XX_NUM_RX_DESCRIPTORS;
 	wl->band_rate_to_idx = wl12xx_band_rate_to_idx;
 	wl->hw_tx_rate_tbl_size = WL12XX_CONF_HW_RXTX_RATE_MAX;
 	wl->hw_min_ht_rate = WL12XX_CONF_HW_RXTX_RATE_MCS0;

drivers/net/wireless/ti/wl12xx/wl12xx.h

@@ -38,6 +38,9 @@
 #define WL128X_SUBTYPE_VER	2
 #define WL128X_MINOR_VER	115
 
+#define WL12XX_NUM_TX_DESCRIPTORS 16
+#define WL12XX_NUM_RX_DESCRIPTORS 8
+
 struct wl127x_rx_mem_pool_addr {
 	u32 addr;
 	u32 addr_extra;

drivers/net/wireless/ti/wl18xx/main.c

@@ -1392,8 +1392,8 @@ static int __devinit wl18xx_probe(struct platform_device *pdev)
 	wl->ops = &wl18xx_ops;
 	wl->ptable = wl18xx_ptable;
 	wl->rtable = wl18xx_rtable;
-	wl->num_tx_desc = 32;
-	wl->num_rx_desc = 32;
+	wl->num_tx_desc = WL18XX_NUM_TX_DESCRIPTORS;
+	wl->num_rx_desc = WL18XX_NUM_TX_DESCRIPTORS;
 	wl->band_rate_to_idx = wl18xx_band_rate_to_idx;
 	wl->hw_tx_rate_tbl_size = WL18XX_CONF_HW_RXTX_RATE_MAX;
 	wl->hw_min_ht_rate = WL18XX_CONF_HW_RXTX_RATE_MCS0;

drivers/net/wireless/ti/wl18xx/wl18xx.h

@@ -33,6 +33,9 @@
 
 #define WL18XX_CMD_MAX_SIZE          740
 
+#define WL18XX_NUM_TX_DESCRIPTORS 32
+#define WL18XX_NUM_RX_DESCRIPTORS 32
+
 struct wl18xx_priv {
 	/* buffer for sending commands to FW */
 	u8 cmd_buf[WL18XX_CMD_MAX_SIZE];