drm/i915: Split shared dpll setup out of __intel_set_mode()

This simplifies __intel_set_mode() a little.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1 file changed