drm/i915: Make intel_dp_set_m_n take crtc_state

Another user of crtc->config gone. The functions it calls also
needed crtc->config, so convert those as well.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[mlankhorst: Still pass m_n struct to intel_pch_transcoder_set_m_n (Ville)]
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181011100457.8776-3-maarten.lankhorst@linux.intel.com

drivers/gpu/drm/i915/intel_drv.h

@@ -1643,7 +1643,8 @@ void gen9_enable_dc5(struct drm_i915_private *dev_priv);
 unsigned int skl_cdclk_get_vco(unsigned int freq);
 void intel_dp_get_m_n(struct intel_crtc *crtc,
 		      struct intel_crtc_state *pipe_config);
-void intel_dp_set_m_n(struct intel_crtc *crtc, enum link_m_n_set m_n);
+void intel_dp_set_m_n(const struct intel_crtc_state *crtc_state,
+		      enum link_m_n_set m_n);
 int intel_dotclock_calculate(int link_freq, const struct intel_link_m_n *m_n);
 bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state, int target_clock,
 			struct dpll *best_clock);