xilinx: versal: Implement device related PM APIs

Implement below device related PM APIs:
  - Request device
  - Release device
  - Set requirement
  - Get device status

Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: I9d84b9ee1be3ee6c5f27a4d6dc324113fc1acb68
diff --git a/plat/xilinx/versal/pm_service/pm_defs.h b/plat/xilinx/versal/pm_service/pm_defs.h
index d482cb7..feaeee1 100644
--- a/plat/xilinx/versal/pm_service/pm_defs.h
+++ b/plat/xilinx/versal/pm_service/pm_defs.h
@@ -24,9 +24,13 @@
 
 /* PM API ids */
 #define PM_GET_API_VERSION		1U
+#define PM_GET_DEVICE_STATUS		3U
 #define PM_REQ_SUSPEND			6U
 #define PM_SELF_SUSPEND			7U
 #define PM_ABORT_SUSPEND		9U
+#define PM_REQUEST_DEVICE		13U
+#define PM_RELEASE_DEVICE		14U
+#define PM_SET_REQUIREMENT		15U
 
 /*********************************************************************
  * Enum definitions
@@ -40,6 +44,22 @@
 };
 
 /**
+ * Subsystem IDs
+ */
+typedef enum {
+	XPM_SUBSYSID_PMC,
+	XPM_SUBSYSID_PSM,
+	XPM_SUBSYSID_APU,
+	XPM_SUBSYSID_RPU0_LOCK,
+	XPM_SUBSYSID_RPU0_0,
+	XPM_SUBSYSID_RPU0_1,
+	XPM_SUBSYSID_DDR0,
+	XPM_SUBSYSID_ME,
+	XPM_SUBSYSID_PL,
+	XPM_SUBSYSID_MAX,
+} XPm_SubsystemId;
+
+/**
  * @PM_RET_SUCCESS:		success
  * @PM_RET_ERROR_ARGS:		illegal arguments provided (deprecated)
  * @PM_RET_ERROR_NOTSUPPORTED:	feature not supported  (deprecated)