Add rustup to Ubuntu 22.04

Some of the new TF-A visualization jobs require Rust/Cargo. This change
adds rustup (and consequently Cargo) to the dependencies so that they
are available for use within the TF-A CI scripts.

Change-Id: I051ea57226fd842e8d77c72d6702301cfd773db4
Signed-off-by: Chris Kay <chris.kay@arm.com>
1 file changed