fix(tftf): disable RMI tests when building for aarch32 architecture

Signed-off-by: Javier Almansa Sobrino <javier.almansasobrino@arm.com>
Change-Id: I6fa83808f7101de50141c89c044425ea355c8f6d
diff --git a/tftf/tests/tests-invalid-access.mk b/tftf/tests/tests-invalid-access.mk
index 9cda78c..3b05349 100644
--- a/tftf/tests/tests-invalid-access.mk
+++ b/tftf/tests/tests-invalid-access.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2022, Arm Limited. All rights reserved.
+# Copyright (c) 2023, Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -9,12 +9,16 @@
 
 TESTS_SOURCES	+=	tftf/tests/misc_tests/test_invalid_access.c
 
+ifeq (${ARCH},aarch64)
+
 TESTS_SOURCES	+=							\
 	$(addprefix tftf/tests/runtime_services/host_realm_managment/,	\
 		host_realm_rmi.c					\
 		host_realm_helper.c					\
 	)
 
+endif
+
 TESTS_SOURCES	+=							\
 	$(addprefix tftf/tests/runtime_services/secure_service/,	\
 		${ARCH}/ffa_arch_helpers.S				\