hw: Make IdxWidth of addr_decode_dync constant to fix synthesis err

Author: Lore0599

src/addr_decode_dync.sv

@@ -67,7 +67,7 @@ module addr_decode_dync #(
   /// Dependent parameter, do **not** overwite!
   ///
   /// Width of the `idx_o` output port.
-  parameter int unsigned IdxWidth  = cf_math_pkg::idx_width(NoIndices),
+  parameter int unsigned IdxWidth  = (NoIndices > 1) ? $clog2(NoIndices) : 1,
   /// Dependent parameter, do **not** overwite!
   ///
   /// Type of the `idx_o` output port.