refactor(tc): change all occurrences of RSS to RSE

Changes all occurrences of "RSS" and "rss" in the code and build files
to "RSE" and "rse".

Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: Idec0bf7a90ae381f5bc968e1bb167daace24a11f
diff --git a/plat/arm/board/tc/rse_ap_testsuites.h b/plat/arm/board/tc/rse_ap_testsuites.h
index 58502ab..9bb42f5 100644
--- a/plat/arm/board/tc/rse_ap_testsuites.h
+++ b/plat/arm/board/tc/rse_ap_testsuites.h
@@ -5,12 +5,12 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef RSS_AP_TESTSUITES_H
-#define RSS_AP_TESTSUITES_H
+#ifndef RSE_AP_TESTSUITES_H
+#define RSE_AP_TESTSUITES_H
 
 #include <test_framework.h>
 
 void register_testsuite_measured_boot(struct test_suite_t *p_test_suite);
 void register_testsuite_delegated_attest(struct test_suite_t *p_test_suite);
 
-#endif /* RSS_AP_TESTSUITES_H */
+#endif /* RSE_AP_TESTSUITES_H */