Added serv and made a blinky testbench for it

rtl/core/sigmadelta_sampler.v

@@ -17,7 +17,7 @@ module sigmadelta_sampler(
     );
 
     reg registered_comp_out;
-    always @(posedge clk) registered_comp_out <= o;
+    always @(posedge clk) registered_comp_out <= comp_out;
     assign o = registered_comp_out;
 
 endmodule

rtl/toplevel/top_generic.v

@@ -9,7 +9,7 @@ module top_generic(
 
     output wire[5:0] r2r
 );
-    `include "util/conv.vh"
+    `include "../util/conv.vh"
     assign led_green = 1'b0;
     assign led_red = 1'b0;