staging: arlan: fix errors reported by checkpatch.pl tool

fix all but one of the errors reported by checkpatch.pl tool.
Errors included wayward braces, white space issues(trailing
and prohibited), C99 issues, and foo* issues

Signed-off-by: John Sheehan <john.d.sheehan@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>