While slightly less efficient, this is only used when configuring the
channels initially (not the hot path) and allows dahdi-base.c to assume
that the open "file" pointer always refers to the channel on which to
perform the operation.
Signed-off-by: Shaun Ruffell <sruffell@digium.com>
git-svn-id: http://svn.astersk.org/svn/dahdi/tools/trunk@9352 17933a7a-c749-41c5-a318-cba88f637d49