soc: qcom: Expose TZ specific device id to other functions

We need to pass TZ specific device id when
calling into TZ for SMMU configuration. Expose
these device ids and an interface function which
can be used to extract these device id.

CRs-Fixed: 959535
Change-Id: I31239d187c893e1bf419a5e9b5add127699ef701
Signed-off-by: Susheel Khiani <skhiani@codeaurora.org>