fix(versal): print proper atf handoff source

Versal uses PLM in the boot flow and printing FSBL in the log for
handoff parameters is misleading. Print proper source of TF-A
handoff parameters.

Change-Id: I331e2eac2f5d30beed8573940ae02094254a759b
Signed-off-by: Akshay Belsare <akshay.belsare@amd.com>
diff --git a/plat/xilinx/versal/bl31_versal_setup.c b/plat/xilinx/versal/bl31_versal_setup.c
index 9b36208..995c852 100644
--- a/plat/xilinx/versal/bl31_versal_setup.c
+++ b/plat/xilinx/versal/bl31_versal_setup.c
@@ -135,7 +135,7 @@
 	} else if (ret != FSBL_HANDOFF_SUCCESS) {
 		panic();
 	} else {
-		INFO("BL31: fsbl-atf handover success %u\n", ret);
+		INFO("BL31: PLM to TF-A handover success %u\n", ret);
 	}
 
 	NOTICE("BL31: Secure code at 0x%lx\n", bl32_image_ep_info.pc);