ci(tc0): switch to SCP 2.8.0 release binaries

This patch changes usage of TC0 SCP binaries
from 2.8.0-dev to 2.8.0 release.

Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Change-Id: Ied9b3f2365330ae1e1ba01f6119b774d94bb70d0
diff --git a/tc0_utils.sh b/tc0_utils.sh
index b81d148..35bf61e 100644
--- a/tc0_utils.sh
+++ b/tc0_utils.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright (c) 2020, Arm Limited. All rights reserved.
+# Copyright (c) 2020-2021, Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -9,8 +9,8 @@
 
 tc_prebuilts="${tc_prebuilts:-$tfa_downloads/total_compute/tc0}"
 
-# Pre-built SCP v2.7.0 release binaries
-scp_prebuilts="${scp_prebuilts:-$tfa_downloads/total_compute_scp_2.8.0-dev/tc0}"
+# Pre-built SCP v2.8.0 release binaries
+scp_prebuilts="${scp_prebuilts:-$tfa_downloads/total_compute_scp_2.8.0/tc0}"
 
 fvp_kernels[fvp-tc-kernel]="$tc_prebuilts/Image"
 fvp_initrd_urls[fvp-tc-ramdisk]="$tc_prebuilts/uInitrd-busybox.0x88000000"