hikey: enable PMF and instrumentations

enable PMF service call and instrumetion for hikey platform

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
diff --git a/plat/hisilicon/hikey/platform.mk b/plat/hisilicon/hikey/platform.mk
index ec4bb5c..e0d0a70 100644
--- a/plat/hisilicon/hikey/platform.mk
+++ b/plat/hisilicon/hikey/platform.mk
@@ -75,3 +75,8 @@
 				plat/hisilicon/hikey/hisi_pwrc.c	\
 				plat/hisilicon/hikey/hisi_pwrc_sram.S	\
 				${HIKEY_GIC_SOURCES}
+ifeq (${ENABLE_PMF}, 1)
+BL31_SOURCES		+=	plat/hisilicon/hikey/hisi_sip_svc.c			\
+				lib/pmf/pmf_smc.c
+endif
+