[MIPS] Reserve syscall numbers for kexec_load.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index 6c7b5ed..3a34f62 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -468,3 +468,4 @@
 	PTR	sys_move_pages
 	PTR	sys_set_robust_list
 	PTR	sys_get_robust_list
+	PTR	sys_ni_syscall			/* 5270 */