The attached patch updates arm-trusted-firmware to 2.9.

I was able to rebuild all the dependent u-boot-* packages!

Unfortunately, arm-trusted-firmware-imx8mq no longer builds, ending with
the error:

  aarch64-linux-gnu-ld.bfd: /tmp/guix-build-arm-trusted-firmware-imx8mq-2.9.drv-0/source/build/imx8mq/release/bl31/bl31.elf section `.xlat_table' will not fit in region `RAM'
  aarch64-linux-gnu-ld.bfd: BL31 image has exceeded its limit.
  aarch64-linux-gnu-ld.bfd: region `RAM' overflowed by 20480 bytes

Upstream has essentially abandoned this target due to tight size
contraints for imx8mq, though there is a maintained vendor fork based
off of some older version, so either we need to freeze this at 2.8 or
use the vendor fork or maybe drop it entirely. I do not believe
arm-trusted-firmware-imx8mq is used by any other guix packages...

... thoughts?


live well,
  vagrant