fix(versal): add SGI register call version check

PM_FEATURE_CHECK is supported only for platform
management API. PM_LOAD_PDI command is not intended
for platform management. This patch removes version
check of PM_LOAD_PDI and adds version check of command
that is used for SGI registartion.

Signed-off-by: Tanmay Shah <tanmay.shah@xilinx.com>
Change-Id: I353163109b639acab73120f405a811770e8831a0
diff --git a/plat/xilinx/versal/pm_service/pm_api_sys.c b/plat/xilinx/versal/pm_service/pm_api_sys.c
index 8fa8a44..d151842 100644
--- a/plat/xilinx/versal/pm_service/pm_api_sys.c
+++ b/plat/xilinx/versal/pm_service/pm_api_sys.c
@@ -514,7 +514,7 @@
 	case PM_GET_TRUSTZONE_VERSION:
 		ret_payload[0] = PM_API_VERSION_2;
 		return PM_RET_SUCCESS;
-	case PM_LOAD_PDI:
+	case TF_A_PM_REGISTER_SGI:
 		ret_payload[0] = PM_API_BASE_VERSION;
 		return PM_RET_SUCCESS;
 	default: