msm: subsys-pil-tz: Introduce generic TZ PIL and SSR driver

In case of secure PIL, the PIL ops are very similar among
different subsystems.

For init_image, mem_setup, auth_and_reset and shutdown ops,
the PIL drivers follow the standard sequence to call into TZ
with the corresponding subsystem's pas id.

For proxy_vote and proxy_unvote ops, different subsystems share
the similar pattern of voting gdsc, regulators, clocks and bus
bandwidth.

Similarly, the SSR ops are common across different subsystems
as well.

Therefore, a generic TZ PIL and SSR  driver is introduced to
provide a uniform way to manage PIL and SSR. The data and resources
information corresponding to the PIL and SSR ops for each subsystem
are contained in each subsystem's device tree node.

Change-Id: I598653d22da7504446a160cb86c876beddbd555c
Signed-off-by: Tianyi Gou <tgou@codeaurora.org>
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>