sparc32: fix sparse warning in ptrace_32.c

Fix following warning:
ptrace_32.c:444:16: warning: symbol 'syscall_trace' was not declared. Should it be static?

Add declaration in kernel.h
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc/kernel/kernel.h

@@ -110,6 +110,9 @@ asmlinkage int do_sys_sigstack(struct sigstack __user *ssptr,
                                struct sigstack __user *ossptr,
                                unsigned long sp);
 
+/* ptrace_32.c */
+asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p);
+
 /* windows.c */
 void try_to_clear_window_buffer(struct pt_regs *regs, int who);
 

arch/sparc/kernel/ptrace_32.c

@@ -26,6 +26,8 @@
 #include <asm/uaccess.h>
 #include <asm/cacheflush.h>
 
+#include "kernel.h"
+
 /* #define ALLOW_INIT_TRACING */
 
 /*