plat(n1sdp): use generic image fetching functions

Some generic functions have been provided for fetching prebuilt images -
use these for N1SDP runs.

Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
Change-Id: I7bb2b3996646983b45d409fff1ce16e2a01f64b9
diff --git a/run_config/n1sdp-fip b/run_config/n1sdp-fip
index 724f3c4..948bd02 100644
--- a/run_config/n1sdp-fip
+++ b/run_config/n1sdp-fip
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright (c) 2021-2022 Arm Limited. All rights reserved.
+# Copyright (c) 2021-2023 Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -33,7 +33,7 @@
         archive_file "mcp_fw.bin"
 
         # Fetch BL33 [uefi.bin] for N1SDP
-        uefi_ci_bin_url="$n1sdp_prebuilts/uefi.bin" get_uefi_bin
+        url="$n1sdp_prebuilts/uefi.bin" filename="uefi.bin" fetch_and_archive
 
         # Create FIP for BL2, BL31, and BL33
         build_fip BL31="$bl31" BL2="$bl2" BL33="$archive/uefi.bin"