IB/ehca: spin_lock_irqsave() takes an unsigned long

The flags argument to spin_lock_irqsave() should really be unsigned
long.  This will also help prevent some warnings when we change u64 to
unsigned long long.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/ehca/ehca_main.c

@@ -955,7 +955,7 @@ void ehca_poll_eqs(unsigned long data)
 			struct ehca_eq *eq = &shca->eq;
 			int max = 3;
 			volatile u64 q_ofs, q_ofs2;
-			u64 flags;
+			unsigned long flags;
 			spin_lock_irqsave(&eq->spinlock, flags);
 			q_ofs = eq->ipz_queue.current_q_offset;
 			spin_unlock_irqrestore(&eq->spinlock, flags);