Try to leak counter values from secure world.

This patch introduces a series of tests that try to leak PMU counter values
from EL3 and S_EL1.

PMU events used:
	- CPU cycles via PMU counter PMCCNTR_EL0
	- Retired writes to PC via PMU counter PMEVCNTR0_EL0

This AARCH64-specific patch is for security fix:
https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/1789

The AARCH32 versions of these tests will be in a future patch.

Signed-off-by: Petre-Ionut Tudor <petre-ionut.tudor@arm.com>
Change-Id: Ib27948edadde30272e59a9ab208543703fa078bd
diff --git a/tftf/tests/tests-standard.mk b/tftf/tests/tests-standard.mk
index f249a37..9ef75bb 100644
--- a/tftf/tests/tests-standard.mk
+++ b/tftf/tests/tests-standard.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018, Arm Limited. All rights reserved.
+# Copyright (c) 2018-2019, Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -10,6 +10,7 @@
 	tests-cpu-extensions.mk			\
 	tests-el3-power-state.mk		\
 	tests-performance.mk			\
+	tests-pmu-leakage.mk			\
 	tests-psci.mk				\
 	tests-runtime-instrumentation.mk	\
 	tests-sdei.mk				\