[IA64] Unwire set/get_robust_list

The syscalls set/get_robust_list must not be wired up until
futex_atomic_cmpxchg_inatomic is implemented.  Otherwise the kernel will
hang in handle_futex_death.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>

arch/ia64/kernel/entry.S

@@ -1605,8 +1605,8 @@ sys_call_table:
 	data8 sys_ni_syscall			// 1295 reserved for ppoll
 	data8 sys_unshare
 	data8 sys_splice
-	data8 sys_set_robust_list
-	data8 sys_get_robust_list
+	data8 sys_ni_syscall			// reserved for set_robust_list
+	data8 sys_ni_syscall			// reserved for get_robust_list
 	data8 sys_sync_file_range		// 1300
 	data8 sys_tee
 	data8 sys_vmsplice

include/asm-ia64/unistd.h

@@ -286,8 +286,7 @@
 /* 1294, 1295 reserved for pselect/ppoll */
 #define __NR_unshare			1296
 #define __NR_splice			1297
-#define __NR_set_robust_list		1298
-#define __NR_get_robust_list		1299
+/* 1298, 1299 reserved for set_robust_list/get_robust_list */
 #define __NR_sync_file_range		1300
 #define __NR_tee			1301
 #define __NR_vmsplice			1302