Staging: xgifb: Fixed style issues.

Now there's only 10 errors and 1 warning given by checkpatch.pl, and
these are related initialization of statics. The only warning left can
be safely ignored I believe.

I'm resending this patch as the previous one was conflicting with the
newer version updated by Aaro Koskinen.
Signed-off-by: Daniel Kenji Toyama <kenji.toyama@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>