SPMD: register the SPD PM hooks

Change-Id: If88d64c0e3d60accd2638a55f9f3299ec700a8c8
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/services/std_svc/spmd/spmd_main.c b/services/std_svc/spmd/spmd_main.c
index 02b73c6..93a0203 100644
--- a/services/std_svc/spmd/spmd_main.c
+++ b/services/std_svc/spmd/spmd_main.c
@@ -266,6 +266,9 @@
 
 	INFO("SPM Core setup done.\n");
 
+	/* Register power management hooks with PSCI */
+	psci_register_spd_pm_hook(&spmd_pm);
+
 	/* Register init function for deferred init. */
 	bl31_register_bl32_init(&spmd_init);