msm: kgsl: Add secure preemption support for A6XX

Allocate the secure preemption buffers and add their addresses
in preemption packets in order to preempt secure contexts.

Change-Id: I4cd21748a8e3f95b0e69e96919a66c735b98664d
Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
3 files changed