xilinx: versal: Implement reset related PM APIs

Implement below reset related APIs:
  - Reset assert
  - Get reset status

Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: Id42c9d3950a0d69125cb0eab79b75e5d22674f14
diff --git a/plat/xilinx/versal/pm_service/pm_defs.h b/plat/xilinx/versal/pm_service/pm_defs.h
index feaeee1..1b8871f 100644
--- a/plat/xilinx/versal/pm_service/pm_defs.h
+++ b/plat/xilinx/versal/pm_service/pm_defs.h
@@ -31,6 +31,8 @@
 #define PM_REQUEST_DEVICE		13U
 #define PM_RELEASE_DEVICE		14U
 #define PM_SET_REQUIREMENT		15U
+#define PM_RESET_ASSERT			17U
+#define PM_RESET_GET_STATUS		18U
 
 /*********************************************************************
  * Enum definitions