xilinx: versal: Add PM_INIT_FINALIZE API for versal

PM_INIT_FINALIZE is not required for versal. To use Linux
Zynqmp PM driver for versal, handle PM_INIT_FINALIZE API
in ATF for versal by always returning SUCCESS.
Signed-off-by: Tejas Patel <tejas.patel@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Change-Id: I6fe5445d78e713d70282ac8931ff8b17c96b2a14

plat/xilinx/versal/pm_service/pm_defs.h

@@ -35,6 +35,7 @@
 #define PM_SET_REQUIREMENT		15U
 #define PM_RESET_ASSERT			17U
 #define PM_RESET_GET_STATUS		18U
+#define PM_INIT_FINALIZE		21U
 #define	PM_PINCTRL_REQUEST		28U
 #define	PM_PINCTRL_RELEASE		29U
 #define	PM_PINCTRL_GET_FUNCTION		30U

plat/xilinx/versal/pm_service/pm_svc_main.c

@@ -152,6 +152,9 @@ uint64_t pm_smc_handler(uint32_t smc_fid, uint64_t x1, uint64_t x2, uint64_t x3,
 			 ((uint64_t)reset_status << 32));
 	}
 
+	case PM_INIT_FINALIZE:
+		SMC_RET1(handle, (uint64_t)PM_RET_SUCCESS);
+
 	case PM_PINCTRL_REQUEST:
 		ret = pm_pinctrl_request(pm_arg[0]);
 		SMC_RET1(handle, (uint64_t)ret);