driver basic test and demo test refactoring

hw/rtl/libs/VX_generic_priority_encoder.v

@@ -2,21 +2,17 @@
 
 module VX_generic_priority_encoder #(
     parameter N = 1
-)  (
-    input  wire[N-1:0]              valids,
-    //output reg[$clog2(N)-1:0] index,
-    output reg[(`LOG2UP(N))-1:0]    index,
-    //output reg[`LOG2UP(N):0] index, // eh
-    output reg                      found
-  );
-
+) (
+    input  wire[N-1:0]           valids,
+    output reg[(`LOG2UP(N))-1:0] index,
+    output reg                   found
+);
     integer i;
     always @(*) begin
         index = 0;
         found = 0;
         for (i = N-1; i >= 0; i = i - 1) begin
             if (valids[i]) begin
-                //index = i[$clog2(N)-1:0];
                 index = i[(`LOG2UP(N))-1:0];
                 found = 1;
             end