xeon-phi: updated technology preview for ibscif

xeon-phi: updated technology preview for ibscif

Changes include:
 - add a module parameter to turn on/off GRH checking, used to detect
   connections going outside the box
 - use mutex instead of spinlock when the lock holder could go sleep
   fixing a soft lockup issue under oversubscribing
 - add semaphore/mutex macros missing on older systems
 - eliminates a race condition between the poll thread and the netdev
   notifier
 - invalidate connections going outside the box
 - set the correct link layer type
 - clean up the driver output
 - perform endian conversion before printing GID
 - fix compiler warnings