sdbus++: Fix construction of objects with flags

Objects don't take kwargs for their constructors so don't call the
object constructor with kwargs

```
| Traceback (most recent call last):
|   File "/home/spirit/src/vesnin/openbmc-alternate/build/tmp/work/armv5e-openbmc-linux-gnueabi/phosphor-dbus-interfaces/1.0-r1/recipe-sysroot-native/usr/bin/sdbus++", line 50, in <module>
|     main()
|   File "/home/spirit/src/vesnin/openbmc-alternate/build/tmp/work/armv5e-openbmc-linux-gnueabi/phosphor-dbus-interfaces/1.0-r1/recipe-sysroot-native/usr/bin/sdbus++", line 45, in main
|     instance = valid_types[args.typeName].load(args.item, args.rootdir)
|   File "/home/spirit/src/vesnin/openbmc-alternate/build/tmp/work/armv5e-openbmc-linux-gnueabi/phosphor-dbus-interfaces/1.0-r1/recipe-sysroot-native/usr/lib/python2.7/site-packages/sdbusplus/interface.py", line 21, in load
|     return Interface(**y)
|   File "/home/spirit/src/vesnin/openbmc-alternate/build/tmp/work/armv5e-openbmc-linux-gnueabi/phosphor-dbus-interfaces/1.0-r1/recipe-sysroot-native/usr/lib/python2.7/site-packages/sdbusplus/interface.py", line 25, in __init__
|     [Property(**p) for p in kwargs.pop('properties', [])]
|   File "/home/spirit/src/vesnin/openbmc-alternate/build/tmp/work/armv5e-openbmc-linux-gnueabi/phosphor-dbus-interfaces/1.0-r1/recipe-sysroot-native/usr/lib/python2.7/site-packages/sdbusplus/property.py", line 12, in __init__
|     super(Property, self).__init__(**kwargs)
|   File "/home/spirit/src/vesnin/openbmc-alternate/build/tmp/work/armv5e-openbmc-linux-gnueabi/phosphor-dbus-interfaces/1.0-r1/recipe-sysroot-native/usr/lib/python2.7/site-packages/sdbusplus/namedelement.py", line 8, in __init__
|     super(NamedElement, self).__init__(**kwargs)
|   File "/home/spirit/src/vesnin/openbmc-alternate/build/tmp/work/armv5e-openbmc-linux-gnueabi/phosphor-dbus-interfaces/1.0-r1/recipe-sysroot-native/usr/lib/python2.7/site-packages/sdbusplus/renderer.py", line 3, in __init__
|     super(Renderer, self).__init__(**kwargs)
| TypeError: object.__init__() takes no parameters
```

Fixes openbmc/sdbusplus#30

Tested:
    Ran with some locally modified properties marked as const. Verified
    that the generated code marks those as const and removes their
    setter

Change-Id: I94965add8588a8a3168662e00ef2502276440ee5
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/tools/sdbusplus/namedelement.py b/tools/sdbusplus/namedelement.py
index ffc3541..5048654 100644
--- a/tools/sdbusplus/namedelement.py
+++ b/tools/sdbusplus/namedelement.py
@@ -3,9 +3,9 @@
 
 class NamedElement(object):
     def __init__(self, **kwargs):
+        super(NamedElement, self).__init__()
         self.name = kwargs.pop('name', "unnamed")
         self.description = kwargs.pop('description', "")
-        super(NamedElement, self).__init__(**kwargs)
 
     def __getattr__(self, name):
         l = {'CamelCase': lambda: inflection.camelize(self.name),
diff --git a/tools/sdbusplus/renderer.py b/tools/sdbusplus/renderer.py
index 65541d4..9a52593 100644
--- a/tools/sdbusplus/renderer.py
+++ b/tools/sdbusplus/renderer.py
@@ -1,6 +1,6 @@
 class Renderer(object):
     def __init__(self, **kwargs):
-        super(Renderer, self).__init__(**kwargs)
+        super(Renderer, self).__init__()
 
     def render(self, loader, template, **kwargs):
         t = loader.get_template(template)