soc: qcom: pil: get crypto cell-id through device tree

scm_pas_init takes a cell-id argument which is hard coded.
Since mas-crypto cell-id is changed from msm-3.18 to msm-4.9,
it causes scm_pas_init to fail. So get crypto cell-id
through device tree instead of hard coded.

Change-Id: Icd58099a54bf389daa1caa3ef6f970b6e7e219b9
Signed-off-by: Jingbiao Lu <jingbiao@codeaurora.org>
[snaseem@codeaurora.org: Resolved trivial conflicts.]
Signed-off-by: Shadab Naseem <snaseem@codeaurora.org>