ftgmac100: Set default ring sizes to 128 entries

I haven't seen any improvement above that size on the machines
I've tested with.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/faraday/ftgmac100.c

@@ -47,8 +47,8 @@
 #define MIN_TX_QUEUE_ENTRIES	32
 
 /* Defaults */
-#define DEF_RX_QUEUE_ENTRIES	256
-#define DEF_TX_QUEUE_ENTRIES	512
+#define DEF_RX_QUEUE_ENTRIES	128
+#define DEF_TX_QUEUE_ENTRIES	128
 
 #define MAX_PKT_SIZE		1536
 #define RX_BUF_SIZE		MAX_PKT_SIZE	/* must be smaller than 0x3fff */