Update TF-A prebuilt, add RPi4 binary

RPi4 support has been merged to the master branch but no stable release
has been published since. Update TF-A with a build of the master branch
for the time being.

Bug: 140223574
Change-Id: I1452f12a50381f9524bb24a60bb1802947117177
8 files changed
tree: 392389ccc097353ec1a25576aede796e411ff245
  1. darwin-x64/
  2. generic/
  3. linux-aarch64/
  4. linux-x64/