ARM: dts: msm: Add PIL support for msmthorium

Add support for mss, wcnss, venus and pronto PIL.
This facilitates the loading of firmware images,
authentication and bringing it out of reset.

Change-Id: I49c9b6403f835e9fffc8843642a4eb58c34d68fb
Signed-off-by: Arun KS <arunks@codeaurora.org>