Revocation control: define done earlier

This was causing undeclared identifier warnings.

Co-authored-by: Adrian Lees <a.lees@lowrisc.org>

rtl/ip/rev_ctl/rtl/rev_ctl.sv

@@ -24,6 +24,10 @@ module rev_ctl import rev_ctl_reg_pkg::*; (
   // Internal registers.
   logic go;
 
+  // Internal wires.
+  logic done;
+  assign done = reg2hw.epoch.running.q & ~core_to_ctl_i[0];
+
   // Architectural registers.
   logic interrupt_status;
 
@@ -46,10 +50,6 @@ module rev_ctl import rev_ctl_reg_pkg::*; (
     end
   end
 
-  // Internal wires.
-  logic done;
-  assign done = reg2hw.epoch.running.q & ~core_to_ctl_i[0];
-
   // Control to core.
   always @(posedge clk_i or negedge rst_ni) begin
     if (~rst_ni) begin