arm-gnu-a-toolchain is now deprecated to be replaced by arm-gnu-toolchain.
The old link [1] now points to a shared page between Cortex-A and
Cortex-R/M [2].
Rename the package, taking into account legacy info, while bumping it.
Also update TF-A package that depends on it.
[1] https://developer.arm.com/downloads/-/gnu-a
[2] https://developer.arm.com/Tools%20and%20Software/GNU%20Toolchain
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
