plat: xilinx: versal: Add support of set max latency for the device

Add support of set max latency, to change in the maximum powerup latency
requirements for a specific device currently used by Subsystem.

Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Change-Id: I8749886abb1a7884a42c4d156d89c9cd562a5b1a
diff --git a/plat/xilinx/versal/pm_service/pm_defs.h b/plat/xilinx/versal/pm_service/pm_defs.h
index b8c017c..5f59ba7 100644
--- a/plat/xilinx/versal/pm_service/pm_defs.h
+++ b/plat/xilinx/versal/pm_service/pm_defs.h
@@ -55,6 +55,7 @@
 #define PM_REQUEST_DEVICE		13U
 #define PM_RELEASE_DEVICE		14U
 #define PM_SET_REQUIREMENT		15U
+#define PM_SET_MAX_LATENCY		16U
 #define PM_RESET_ASSERT			17U
 #define PM_RESET_GET_STATUS		18U
 #define PM_INIT_FINALIZE		21U