feat(lib/s2tt): add device memory tests

- Add device memory related unit tests.
- Modify s2tte_get_ripas_tc2() and create
new s2tte_get_ripas_tc3() test to consider
RMI_ASSIGNED_DEV HIPAS value.

Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
Change-Id: I670458bb4425f3b130e4b7c056ce3d5ec856f4b2
diff --git a/lib/s2tt/tests/s2tt_tests_base_g2.cpp b/lib/s2tt/tests/s2tt_tests_base_g2.cpp
index 1d62005..e853a21 100644
--- a/lib/s2tt/tests/s2tt_tests_base_g2.cpp
+++ b/lib/s2tt/tests/s2tt_tests_base_g2.cpp
@@ -323,7 +323,7 @@
 
 /*
  * Helper to implement a set of negative tests for
- * s2tte_is_unassigned_{x}_block() APIS where x belongs to
+ * s2tte_is_unassigned_{x}_block() APIs where x belongs to
  * [RMI_EMPTY, RMI_RAM, RMI_DESTROYED, NS]:
  *
  *	- Validate s2tt_is_unassigned_{x}_block() with a corresponding