Include request for reset-rework branch v3

[j.glisse at gmail.com]

Ok so i reread stuff and the :
drm/radeon: add general purpose fence signaled callback
is a big NAK actually. It change the paradigm. Moving most of
the handling into the irq process which is something i am intimatly
convinced we should avoid.

Here is the patchset up to ib pool cleanup. I have yet rebase the
other patches as i am tracking done some issue in the sa allocation.

Cheers,
Jerome