wil6210: Use larger Tx rings

When using scatter-gather, more descriptor entries get used.
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/wil6210/wil6210.h

@@ -35,7 +35,7 @@ static inline u32 WIL_GET_BITS(u32 x, int b0, int b1)
 #define WIL6210_MEM_SIZE (2*1024*1024UL)
 
 #define WIL6210_RX_RING_SIZE	(128)
-#define WIL6210_TX_RING_SIZE	(128)
+#define WIL6210_TX_RING_SIZE	(512)
 #define WIL6210_MAX_TX_RINGS	(24) /* HW limit */
 #define WIL6210_MAX_CID		(8) /* HW limit */
 #define WIL6210_NAPI_BUDGET	(16) /* arbitrary */