MFC	r258615

Take care to handle the full 16 byte buffer in the get/put routines. Also,
skip the VTERM header once when receiving data from the hypervisor call when
we have a HVTERMPROT connection.
MFC	r258778

Add a printf to inform about the logical memory block size which is in use
by the system. This might give a hint why a pSeries system is not booting.