drm/i915: switch order of power domain init wrt. irq install
On VLV at least the display IRQ register access and functionality depends on its power well to be on, so move the power domain HW init before we install the IRQs. Signed-off-by: NImre Deak <imre.deak@intel.com> Reviewed-by: NJesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
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