add registration finished identifier

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4764 43c1dc8c-776e-4df2-8ef1-6e829299be21
revert changes for SPA504G test

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4765 43c1dc8c-776e-4df2-8ef1-6e829299be21
use registration finished identifier to set registration state

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4766 43c1dc8c-776e-4df2-8ef1-6e829299be21
add comments for sccp_deviceProtocol_t

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4767 43c1dc8c-776e-4df2-8ef1-6e829299be21