xilinx: versal: Add feature check API

Add API to check availability of given API in ATF
as well as platform management controller and returns
the supported version number.

Signed-off-by: Ravi Patel <ravi.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: I608b38f60b36c4d105b7a205ecb8b02de0c00f3c
diff --git a/plat/xilinx/versal/pm_service/pm_api_sys.h b/plat/xilinx/versal/pm_service/pm_api_sys.h
index 282c175..4e884e0 100644
--- a/plat/xilinx/versal/pm_service/pm_api_sys.h
+++ b/plat/xilinx/versal/pm_service/pm_api_sys.h
@@ -65,5 +65,5 @@
 enum pm_ret_status pm_query_data(uint32_t qid, uint32_t arg1, uint32_t arg2,
 				 uint32_t arg3, uint32_t *data);
 unsigned int pm_get_shutdown_scope(void);
-
+enum pm_ret_status pm_feature_check(uint32_t api_id, unsigned int *version);
 #endif /* PM_API_SYS_H */