staging: lustre: place EXPORT_SYMBOL after its function

This patch fixes the following type of warnings detected by
checkpatch.pl:

WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable

Signed-off-by: Teodora Baluta <teobaluta@gmail.com>
Reviewed-by: Lisa Nguyen <lisa@xenapiadmin.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>