ionic: Change default number of descriptors for Tx and Rx

Cut down the number of default Tx and Rx descriptors to save
initial memory requirements.
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/pensando/ionic/ionic_dev.h

@@ -16,7 +16,7 @@
 #define IONIC_MAX_TX_DESC		8192
 #define IONIC_MAX_RX_DESC		16384
 #define IONIC_MIN_TXRX_DESC		64
-#define IONIC_DEF_TXRX_DESC		4096
+#define IONIC_DEF_TXRX_DESC		1024
 #define IONIC_RX_FILL_THRESHOLD		16
 #define IONIC_RX_FILL_DIV		8
 #define IONIC_TSO_DESCS_NEEDED		44 /* 64K TSO @1500B */