fixes constructor calls of derived riscv_hart classes

src/iss/arch/wt_cache.h

@@ -81,7 +81,7 @@ public:
     using mem_write_f = typename BASE::mem_write_f;
     using phys_addr_t = typename BASE::phys_addr_t;
 
-    wt_cache();
+    wt_cache(feature_config cfg = feature_config{});
     virtual ~wt_cache() = default;
 
     unsigned size{4096};
@@ -103,7 +103,11 @@ protected:
 
 
 template<typename BASE>
-inline wt_cache<BASE>::wt_cache() {
+inline wt_cache<BASE>::wt_cache(feature_config cfg)
+:BASE(cfg)
+, io_address{cfg.io_address}
+, io_addr_mask{cfg.io_addr_mask}
+{
     auto cb = base_class::replace_mem_access(
             [this](phys_addr_t a, unsigned l, uint8_t* const d) -> iss::status { return read_cache(a, l,d);},
             [this](phys_addr_t a, unsigned l, uint8_t const* const d) -> iss::status { return write_cache(a, l,d);});