Add support for user defined enums in field encode property. #29

tests/test_enum/regblock.rdl

@@ -0,0 +1,12 @@
+addrmap top {
+    enum my_enum {
+        val_1 = 3 {name = "Value 1";};
+        val_2 = 4 {desc = "Second value";};
+    };
+    reg {
+        field {
+            encode = my_enum;
+            sw=rw; hw=na;
+        } f[2:0] = my_enum::val_2;
+    } r0;
+};