NOVA: Fix ldso test for 64bit

The generic parent_cap.cc overwrote the beginning of the data segment with
to much. Reserved are solely 16 byte, for 64bit we use however 32byte.

Actually, the parent_cap copying is not required at all. The parent cap
selector is at a fixed define place, so that no exported symbols are required
for determination of the parent_cap.

Remove it.

os/lib/mk/nova/ldso-arch.mk

@@ -0,0 +1,5 @@
+SRC_CC = parent_cap.cc binary_name.cc
+LIBS   = ldso_crt0
+
+vpath parent_cap.cc $(REP_DIR)/src/lib/ldso/arch/nova
+vpath binary_name.cc $(REP_DIR)/src/lib/ldso/arch

os/src/lib/ldso/arch/nova/parent_cap.cc

@@ -0,0 +1,21 @@
+/*
+ * \brief  Parent capability manipulation
+ * \author Alexander Boettcher
+ * \date   2012-08-13
+ */
+
+/*
+ * Copyright (C) 2009-2012 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#include <ldso/arch.h>
+
+void Genode::set_parent_cap_arch(void *ptr)
+{
+	/* Not required, determinig parent cap is done not using any exported
+	 * symbols
+	 */
+}