Add Addressmap block size to generated package (#134)

* add map size as a localparam in rdl map package

* rename from _SIZE -> _BYTES_SIZE

* fix names on new test & localparam

* wrap map size in SVInt

src/peakrdl_regblock/package_tmpl.sv

@@ -5,6 +5,7 @@ package {{ds.package_name}};
 
     localparam {{ds.module_name.upper()}}_DATA_WIDTH = {{ds.cpuif_data_width}};
     localparam {{ds.module_name.upper()}}_MIN_ADDR_WIDTH = {{ds.addr_width}};
+    localparam {{ds.module_name.upper()}}_SIZE = {{SVInt(ds.top_node.size)}};
 
     {{hwif.get_package_contents()|indent}}
 endpackage