tile: use siginfo_t, not struct siginfo

As of glibc 2.16, "struct siginfo" is no longer supported,
and "siginfo_t" must be used instead.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
diff --git a/signal.c b/signal.c
index cc1d511..55815aa 100644
--- a/signal.c
+++ b/signal.c
@@ -971,7 +971,7 @@
 		sigset_t sigm;
 
 		/* offset of ucontext in the kernel's sigframe structure */
-#		define SIGFRAME_UC_OFFSET C_ABI_SAVE_AREA_SIZE + sizeof(struct siginfo)
+#		define SIGFRAME_UC_OFFSET C_ABI_SAVE_AREA_SIZE + sizeof(siginfo_t)
 		if (umove(tcp, tile_regs.sp + SIGFRAME_UC_OFFSET, &uc) < 0)
 			return 0;
 		sigemptyset(&sigm);