fpga: make xlnx_pr_decoupler_br_ops const

Make this const as it is only passed to a const argument of the function
fpga_bridge_register.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Alan Tull <atull@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/fpga/xilinx-pr-decoupler.c

@@ -79,7 +79,7 @@ static int xlnx_pr_decoupler_enable_show(struct fpga_bridge *bridge)
 	return !status;
 }
 
-static struct fpga_bridge_ops xlnx_pr_decoupler_br_ops = {
+static const struct fpga_bridge_ops xlnx_pr_decoupler_br_ops = {
 	.enable_set = xlnx_pr_decoupler_enable_set,
 	.enable_show = xlnx_pr_decoupler_enable_show,
 };