powerpc: switch to generic old sigsuspend

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index 97909d3b..66a21c1 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -75,6 +75,7 @@
 COMPAT_SYS_SPU(ssetmask)
 SYSCALL_SPU(setreuid)
 SYSCALL_SPU(setregid)
+#define compat_sys_sigsuspend sys_sigsuspend
 SYS32ONLY(sigsuspend)
 COMPAT_SYS(sigpending)
 COMPAT_SYS_SPU(sethostname)