[SPARC64]: Move signal compat bits to new header file.

Create asm-sparc64/compat_signal.h and stuff things there.

This avoids the "linux/compat.h includes asm/signal.h but
asm/signal.h needs compat_sigset_t which isn't defined yet"
problems introduced recently.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-sparc64/compat_signal.h b/include/asm-sparc64/compat_signal.h
new file mode 100644
index 0000000..7aefa30
--- /dev/null
+++ b/include/asm-sparc64/compat_signal.h
@@ -0,0 +1,30 @@
+#ifndef _COMPAT_SIGNAL_H
+#define _COMPAT_SIGNAL_H
+
+#include <linux/config.h>
+#include <linux/compat.h>
+#include <asm/signal.h>
+
+#ifdef CONFIG_COMPAT
+struct __new_sigaction32 {
+	unsigned		sa_handler;
+	unsigned int    	sa_flags;
+	unsigned		sa_restorer;     /* not used by Linux/SPARC yet */
+	compat_sigset_t 	sa_mask;
+};
+
+struct __old_sigaction32 {
+	unsigned		sa_handler;
+	compat_old_sigset_t  	sa_mask;
+	unsigned int    	sa_flags;
+	unsigned		sa_restorer;     /* not used by Linux/SPARC yet */
+};
+
+typedef struct sigaltstack32 {
+	u32			ss_sp;
+	int			ss_flags;
+	compat_size_t		ss_size;
+} stack_t32;
+#endif
+
+#endif /* !(_COMPAT_SIGNAL_H) */