[coreboot-gerrit] Change in coreboot[master]: Update arm-trusted-firmware submodule to upstream master

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/44885 )

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

Update arm-trusted-firmware submodule to upstream master

Updating from commit id ace23683b:
2019-09-27 Merge changes from topic "ld/stm32-authentication" into
       integration

to commit id a4c979ade:
2020-08-26 Merge changes I6bf1db15,I8631c34a,Id76ada14 into integration

This brings in 1825 new commits.

Signed-off-by: Julius Werner 
Change-Id: Id26301dae421eec61c10a2d18842053f3228c557
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44885
Reviewed-by: Hung-Te Lin 
Tested-by: build bot (Jenkins) 
---
M 3rdparty/arm-trusted-firmware
1 file changed, 1 insertion(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Hung-Te Lin: Looks good to me, approved

diff --git a/3rdparty/arm-trusted-firmware b/3rdparty/arm-trusted-firmware
index ace2368..a4c979a 160000
--- a/3rdparty/arm-trusted-firmware
+++ b/3rdparty/arm-trusted-firmware
@@ -1 +1 @@
-Subproject commit ace23683beb81354d6edbc61c087ab8c384d0631
+Subproject commit a4c979ade4438dfdd69c1b6e23b64e88eb648183