ci: update bl31 (no spmd) prebuilts to TF-A v2.8

Rename trusted-firmware-a-trusty to trusted-firmware-a
Generate binaries from upstream TF-A v2.8 release [1].
Qemu platform requires the downstream fix [2].
Do no longer rely on Trusty SPD option for qemu platform.

[1] https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/tag/?h=v2.8
[2] https://android.googlesource.com/trusty/external/trusted-firmware-a/+/351e5ea68331e68e1cfd9322ff9f5f338638a3e2%5E%21/#F0

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: Ibb1b7a425ea86a395c2f41585cd7fe45e3d11260
diff --git a/linux-aarch64/trusted-firmware-a/METADATA b/linux-aarch64/trusted-firmware-a/METADATA
new file mode 100644
index 0000000..9450f6c
--- /dev/null
+++ b/linux-aarch64/trusted-firmware-a/METADATA
@@ -0,0 +1,16 @@
+name: "trusted-firmware-a"
+description: "Trusted Firmware-A (TF-A) provides a reference implementation of secure world software for Armv7-A and Armv8-A."
+
+third_party {
+  url {
+    type: HOMEPAGE
+    value: "https://www.trustedfirmware.org/"
+  }
+  url {
+    type: GIT
+    value: "https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git"
+  }
+  version: "2.8"
+  last_upgrade_date { year: 2023 month: 01 day: 17 }
+  license_type: NOTICE
+}