[SPARC64]: Make use of compat_sys_ptrace()

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-sparc64/ptrace.h b/include/asm-sparc64/ptrace.h
index 734a767..8617c3a 100644
--- a/include/asm-sparc64/ptrace.h
+++ b/include/asm-sparc64/ptrace.h
@@ -95,6 +95,8 @@
 
 #ifdef __KERNEL__
 
+#define __ARCH_WANT_COMPAT_SYS_PTRACE
+
 #define force_successful_syscall_return()	    \
 do {	current_thread_info()->syscall_noerror = 1; \
 } while (0)