drm/i915: split encoder get_config calls from crtc get_clock calls
drm/i915: split encoder get_config calls from crtc get_clock calls

This should help on HSW, where we don't currently have a get_clock call.

Reported-by: Paulo Zanoni <0571e552cb7b98367d125c51b8eddbe8fcc92367@gmail.com>
Signed-off-by: Jesse Barnes <bc7add126c2dbb8382bf1c28ac262b9363a32706@virtuousgeek.org>
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs