zynqmp: pm: Add clock control EEMI API and ioctl functions

These are empty functions with no logic right now. Code
will be added in subsequent commits.

Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
diff --git a/plat/xilinx/zynqmp/platform.mk b/plat/xilinx/zynqmp/platform.mk
index 2abcd28..e49a9cd 100644
--- a/plat/xilinx/zynqmp/platform.mk
+++ b/plat/xilinx/zynqmp/platform.mk
@@ -79,6 +79,7 @@
 				plat/xilinx/zynqmp/pm_service/pm_api_sys.c	\
 				plat/xilinx/zynqmp/pm_service/pm_api_pinctrl.c	\
 				plat/xilinx/zynqmp/pm_service/pm_api_ioctl.c	\
+				plat/xilinx/zynqmp/pm_service/pm_api_clock.c	\
 				plat/xilinx/zynqmp/pm_service/pm_ipi.c		\
 				plat/xilinx/zynqmp/pm_service/pm_client.c	\
 				plat/xilinx/zynqmp/ipi_mailbox_service/ipi_mailbox_svc.c