script: Fix the regression caused by cmsis dir update

This change fixes a regression cause by following change

14c45c87 script: fix hardcoded cmsis path

Although the change doesn't cause any issue and passes CI,
it has impacted functioning of scp-ci-gateway CI job
particularly for github pull requests for SCP project.

Reverting this change to avoid various CI job failures till
proper fix is found.

Change-Id: If5f093d00186bfb62508a7e6d42639bcf90eb749
Signed-off-by: Girish Pathak <girish.pathak@arm.com>
1 file changed