sfc: Clean up struct falcon_board and struct falcon_board_data

Put all static information in struct falcon_board_type and replace it
with a pointer in struct falcon_board.  Simplify probing aocordingly.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index b001f38..a95402d 100644
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -303,7 +303,7 @@
 	u16 old_adv, adv;
 	int rc = 0;
 
-	falcon_board(efx)->init_phy(efx);
+	falcon_board(efx)->type->init_phy(efx);
 
 	phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
 	if (!phy_data)