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_api_sys.h b/plat/xilinx/versal/pm_service/pm_api_sys.h
index dd2aefc..a280b3e 100644
--- a/plat/xilinx/versal/pm_service/pm_api_sys.h
+++ b/plat/xilinx/versal/pm_service/pm_api_sys.h
@@ -73,4 +73,5 @@
 enum pm_ret_status pm_get_op_characteristic(uint32_t device_id,
 					    enum pm_opchar_type type,
 					    uint32_t *result);
+enum pm_ret_status pm_set_max_latency(uint32_t device_id, uint32_t latency);
 #endif /* PM_API_SYS_H */