clone.sh: fix spm project name and set spm_root

Match the project name used by tf-a-ci-scripts and set the spm_root
environment variable so that the repo cloned based on the topic
can be used by the tf-a-ci-scripts.

Change-Id: I2f51258d1fc27f45b510cf77844d78d9d2950bea
Signed-off-by: Daniel Boulby <daniel.boulby@arm.com>
2 files changed