Port inside group inside subdevice case

Author: e-malitsky

test/1.4/lib/T_io_memory.dml

@@ -78,6 +78,14 @@ subdevice ab {
             }
         }
     }
+    group _group {
+        bank function_io_memory_bank {
+            param use_io_memory = false;  // not using bank_io_memory
+            implement io_memory {
+                is function_io_memory;
+            }
+        }
+    }
 }
 bank b {
     is function_mapped_bank;

test/1.4/lib/T_io_memory.py

@@ -26,6 +26,9 @@
                                          0xb, 0), size=1).read(), 0xab)
 stest.expect_equal(dev_util.Register_LE((obj.ab.bank.function_io_memory_bank,
                                          0xb, 0), size=1).read(), 0xab)
+# bank inside group inside subdevice is a part of subdevice scope
+stest.expect_equal(dev_util.Register_LE(
+    (obj.ab._group.bank.function_io_memory_bank, 0xb, 0), size=1).read(), 0xab)
 # subdevice of subdevice is also isolated
 stest.expect_equal(dev_util.Register_LE((obj.ab.cc, 0xb, 0), size=1).read(),
                                          0xcc)