Staging: lustre: lnet: Make functions static

This patch makes the following functions static
as they are only used in their respective files.
These functions were detected by sparse.
- lib-md.c   : lnet_md_validate
- lib-move.c : lnet_ni_*
               lnet_setpayloadbuffer
               lnet_peer_alive_locked
               lnet_msg2bufpool
               lnet_post_routed_recv_locked
               lnet_configure / lnet_unconfigure
               lnet_ioctl
               init_lnet
               fini_lnet

Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>