add some lineButton array for fast linedevice access

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4773 43c1dc8c-776e-4df2-8ef1-6e829299be21
add some defines for instance offsets

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4774 43c1dc8c-776e-4df2-8ef1-6e829299be21