staging: lustre: Use __init and __exit markers for lifecycle functions

Apply __init marker to module's init function and __exit to module's
exit function as they both have no other usage.

Signed-off-by: Mariusz Gorski <marius.gorski@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed