fpga: xilinx: Simplify load/dump/info function handling

Connect FPGA version with appropriate operations
to remove huge switch-cases for every FPGA family.
Tested on Zynq. Spartan2/Spartan3/Virtex2 just compile test.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/armadeus/apf27/fpga.c b/board/armadeus/apf27/fpga.c
index 7d6e1e4..65a4812 100644
--- a/board/armadeus/apf27/fpga.c
+++ b/board/armadeus/apf27/fpga.c
@@ -48,6 +48,7 @@
 	 1196128l/8,
 	 (void *)&fpga_fns,
 	 0,
+	 &spartan3_op,
 	 "3s200aft256"}
 };