ARM: dts: msm: Enable verity for system and vendor partition on MSM8909

This feature will help to push content in vendor and system partition
at run time after execute disable-verity and reboot command.

Change-Id: I65b297584e431f7888ae881bc2b3729e548818ba
Signed-off-by: Pranshu Gupta <pransh@codeaurora.org>