IB/hfi1: Validate fault injection opcode user input

The opcode range for fault injection from user should be validated before
it is applied to the fault->opcodes[] bitmap to avoid out-of-bound
error.

Cc: <stable@vger.kernel.org>
Fixes: a74d5307

 ("IB/hfi1: Rework fault injection machinery")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>