Document wxTP_DEFAULT as a standalone constant.

Make sure the declarations in the documentation header can be really parsed.

Closes #14270.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71354 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/timectrl.h

@@ -8,6 +8,21 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+/**
+    Styles used with wxTimePickerCtrl.
+
+    Currently no special styles are defined for this object.
+
+    @library{wxadv}
+    @category{pickers}
+
+    @since 2.9.3
+ */
+enum
+{
+    wxTP_DEFAULT = 0
+};
+
 /**
     @class wxTimePickerCtrl