Staging: netwave: fixed trailing whitespace style issue in netwave_cs.c

This is a patch to the netwave_cs.c file that fixes up all the
trailing whitespace errors found by the checkpatch.pl tool.

Signed-off-by: Prashant P. Shah <pshah.mumbai@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>