tegra: host: move stale wait checking into the kernel

tegra: host: move stale wait checking into the kernel

The kernel now receives wait tracking data (similar to gathers and
relocs) and compares the current syncpt with the threshold value.

If it's old, it gets a kernel mapping and rewrites the method data
to use a kernel reserved syncpt that is always 0 (so trivially pops
when seen by the HW).

Patch has dependency to the user-space patches

Submitted on behalf of: Chris Johnson <cjohnson@nvidia.com>
original work by: Chris Johnson <cjohnson@nvidia.com>

Change-Id: I4d4e5d3b49cab860485c4172f87247f5b4f5ea6e