[POWERPC] Wire up sys_epoll_pwait

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/systbl.h b/include/asm-powerpc/systbl.h
index 418e5c7..fe63831 100644
--- a/include/asm-powerpc/systbl.h
+++ b/include/asm-powerpc/systbl.h
@@ -306,3 +306,4 @@
 COMPAT_SYS_SPU(set_robust_list)
 COMPAT_SYS(move_pages)
 SYSCALL_SPU(getcpu)
+COMPAT_SYS(epoll_pwait)