[IA64] Use srlz.d instead of srlz.i in ia64_leave_syscall

Use srlz.d instead of srlz.i.  Safe because we don't care whether
the VHPT walker sees the clearing of PSR.ic (if it does, that's fine
if it doesn't, it's OK too since the kernel-text is pinned anyhow).
Good for another 11+ cycles in (normal) getpid().
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/entry.S

@@ -749,7 +749,7 @@ ENTRY(ia64_leave_syscall)
 	ld8.fill r1=[r3],16	// load r1
 (pUStk) mov r17=1
 	;;
-	srlz.i			// M0  ensure interruption collection is off
+	srlz.d			// M0  ensure interruption collection is off
 	ld8.fill r13=[r3],16
 	nop.i 0
 	;;