tests: use fup + tip.pgd at the of tests

Changed the relevant tests to use fup(address) and tip.pgd(no_ip)
instead of the tip.pgd(ip).

Change-Id: I41c02ea32f3c30076d2f538a8c36608313768a40
Signed-off-by: Ivan De Cesaris <ivan.de.cesaris@intel.com>