coverity: Improve source file coverage using new build features

This patch also updates the path to scmi power_domain driver that is
currently excluded from coverity analysis.

Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
Change-Id: I9ad4a0eaaba3dec141a0da37ac72d43333738105
2 files changed