Move process-related functions and structures to proc.h
diff --git a/sysdeps/linux-gnu/m68k/trace.c b/sysdeps/linux-gnu/m68k/trace.c
index 2f89fdf..c63702d 100644
--- a/sysdeps/linux-gnu/m68k/trace.c
+++ b/sysdeps/linux-gnu/m68k/trace.c
@@ -6,6 +6,7 @@
 #include <sys/ptrace.h>
 #include <asm/ptrace.h>
 
+#include "proc.h"
 #include "common.h"
 
 #if (!defined(PTRACE_PEEKUSER) && defined(PTRACE_PEEKUSR))