makesyscalls: intptr_t arguments are pointers

Match intptr_t arguments as pointers.  Currently this is a no-op
change to systrace_args.c.

Reviewed by:	kevans

sys/tools/makesyscalls.lua

@@ -399,8 +399,8 @@ local function write_line_pfile(tmppat, line)
 end
 
 local function isptrtype(type)
-	return type:find("*") or type:find("caddr_t")
-	    -- XXX NOTYET: or type:find("intptr_t")
+	return type:find("*") or type:find("caddr_t") or
+	    type:find("intptr_t")
 end
 
 local process_syscall_def