powerpc: Wire renameat2() syscall

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/systbl.h

@@ -361,3 +361,4 @@ SYSCALL(finit_module)
 SYSCALL(ni_syscall) /* sys_kcmp */
 SYSCALL_SPU(sched_setattr)
 SYSCALL_SPU(sched_getattr)
+SYSCALL_SPU(renameat2)

arch/powerpc/include/asm/unistd.h

@@ -12,7 +12,7 @@
 #include <uapi/asm/unistd.h>
 
 
-#define __NR_syscalls		357
+#define __NR_syscalls		358
 
 #define __NR__exit __NR_exit
 #define NR_syscalls	__NR_syscalls

arch/powerpc/include/uapi/asm/unistd.h

@@ -379,5 +379,6 @@
 #define __NR_kcmp		354
 #define __NR_sched_setattr	355
 #define __NR_sched_getattr	356
+#define __NR_renameat2		357
 
 #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */