Telephony Port to Linux 3.0: Mux Driver

Telephony Port to Linux 3.0: Mux Driver

BZ 14734

This is port for the telephony MUX driver from linux 2.6 to linux 3.0
As n_gsm.c was already existing in the linux 3.0 tree, this is mainly a patch
containing the differences between the 2 versions plus the fix shown
by checkpatch.pl tools.

Change-Id: I518edf602c4101ff18baf57b1e9659d2404d9f1b
Signed-off-by: Marc Blassin <marcx.blassin@intel.com>
Reviewed-on: http://android.intel.com:8080/24613
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Tested-by: Gross, Mark <mark.gross@intel.com>