xilinx: versal: Add support for PM_GET_OPERATING_CHARACTERISTIC EEMI call

This patch adds EEMI support for PM_GET_OPERATING_CHARACTERISTIC api id.  This
interface obtains operating characteristic of a device from PMC firmware.  The
'power', 'temperature', and 'latency' characteristic are the options that are
supported.

Signed-off-by: Saeed Nowshadi <saeed.nowshadi@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: If30959ba6a3a778a17df2a4281c2c09832cf7e92
diff --git a/plat/xilinx/versal/pm_service/pm_api_sys.h b/plat/xilinx/versal/pm_service/pm_api_sys.h
index 995c49e..4de592a 100644
--- a/plat/xilinx/versal/pm_service/pm_api_sys.h
+++ b/plat/xilinx/versal/pm_service/pm_api_sys.h
@@ -69,4 +69,7 @@
 enum pm_ret_status pm_feature_check(uint32_t api_id, unsigned int *version);
 enum pm_ret_status pm_load_pdi(uint32_t src, uint32_t address_low,
 			       uint32_t address_high);
+enum pm_ret_status pm_get_op_characteristic(uint32_t device_id,
+					    enum pm_opchar_type type,
+					    uint32_t *result);
 #endif /* PM_API_SYS_H */