LU-9019 lnet: simplify lnet_eq_wait_locked

LU-9019 lnet: simplify lnet_eq_wait_locked

We can simplify the code by taking advantage of the behavior
of schedule_timeout_interruptible(). Instead of testing if
tms is less than zero we can pass in a signed long that
schedule_timeout_interruptible is expecting and for the case
of no timeout we can pass in MAX_SCHEDULE_TIMEOUT.

Change-Id: I15126aab500e975ec34ee270d3a1f9b83cf50902
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/23147
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Tested-by: Jenkins
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>