[S] Change in coreboot[master]: Update arm-trusted-firmware submodule to upstream v2.8.0

[Felix Singer (Code Review)]

Felix Singer has submitted this change. ( https://review.coreboot.org/c/coreboot/+/69946 )

Change subject: Update arm-trusted-firmware submodule to upstream v2.8.0
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Update arm-trusted-firmware submodule to upstream v2.8.0

Updating from commit id 61fe7826d:
2022-10-18 16:20:05 +0200 - (Merge "feat(fvp): build delegated attestation in BL31" into integration)

to commit id 9881bb93a:
2022-11-21 19:12:00 +0100 - (Merge "docs(spm): update threat model" into integration)

This brings in 227 new commits.

Change-Id: I6c902a7360b5436df22c829c7e387457598c3b94
Signed-off-by: Elyes Haouas 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69946
Tested-by: build bot (Jenkins) 
Reviewed-by: Felix Singer 
---
M 3rdparty/arm-trusted-firmware
1 file changed, 22 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Felix Singer: Looks good to me, approved

diff --git a/3rdparty/arm-trusted-firmware b/3rdparty/arm-trusted-firmware
index 61fe782..9881bb9 160000
--- a/3rdparty/arm-trusted-firmware
+++ b/3rdparty/arm-trusted-firmware
@@ -1 +1 @@
-Subproject commit 61fe7826d8ae41c906b2189136a1ae482f91f84a
+Subproject commit 9881bb93a3bc0a3ea37e9f093e09ab4b360a9e48