Staging: lustre: Corrected styling errors reported by checkpatch.pl script on file ptllnd_wire.h

Moved '{' from new line to same line as struct as advised by checkpatch.pl script.

Signed-off-by: Joshua Baldock <joshua.baldock@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>