RDMA/qedr: Mark three functions as static

mark qedr_get_state_from_ibqp(), __qedr_alloc_mr() and __qedr_post_send()
as static since they are only used in the same file.

Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>