drm/i915: Move w/a LRI debug message from context-init to driver load

The spam of every context initialisation saying the same thing is annoying
me! Move the information to the setup of the engine.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170301121131.11588-1-chris@chris-wilson.co.uk


Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>