consolidate kernel-side struct sigaction declarations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 01451a1..0b6878e 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -249,6 +249,20 @@
 extern int show_unhandled_signals;
 extern int sigsuspend(sigset_t *);
 
+struct sigaction {
+#ifndef __ARCH_HAS_ODD_SIGACTION
+	__sighandler_t	sa_handler;
+	unsigned long	sa_flags;
+#else
+	unsigned long	sa_flags;
+	__sighandler_t	sa_handler;
+#endif
+#ifdef __ARCH_HAS_SA_RESTORER
+	__sigrestore_t sa_restorer;
+#endif
+	sigset_t	sa_mask;	/* mask last for extensibility */
+};
+
 struct k_sigaction {
 	struct sigaction sa;
 #ifdef __ARCH_HAS_KA_RESTORER
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index d2dd2f6..1c4938b 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -68,11 +68,11 @@
 #include <linux/types.h>
 #include <linux/aio_abi.h>
 #include <linux/capability.h>
+#include <linux/signal.h>
 #include <linux/list.h>
 #include <linux/bug.h>
 #include <linux/sem.h>
 #include <asm/siginfo.h>
-#include <asm/signal.h>
 #include <linux/unistd.h>
 #include <linux/quota.h>
 #include <linux/key.h>