IB/hfi1: use true,false for bool variable

Fixes coccicheck warning:

drivers/infiniband/hw/hfi1/rc.c:2602:1-8: WARNING: Assignment of 0/1 to bool variable

Link: https://lore.kernel.org/r/1577176812-2238-3-git-send-email-zhengbin13@huawei.comReported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/hfi1/rc.c

@@ -2599,7 +2599,7 @@ static noinline int rc_rcv_error(struct ib_other_headers *ohdr, void *data,
 	 * to be sent before sending this one.
 	 */
 	e = NULL;
-	old_req = 1;
+	old_req = true;
 	ibp->rvp.n_rc_dupreq++;
 
 	spin_lock_irqsave(&qp->s_lock, flags);