staging: dgnc: remove dgnc_init_globals function

The dgnc_init_globals() function is only initializing the timer so
initialize it directly and remove dgnc_init_globals() and change the
comment appropriately.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>