drm/i915/display: only include intel_dp_link_training.h where needed

The intel_dp_link_training.h include has no need or place in
intel_display.h. Include it in intel_display.c instead.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Fixes: eadf6f9170 ("drm/i915/display/icl: Enable master-slaves in trans port sync")
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029103947.7535-1-jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_display.c

@@ -66,6 +66,7 @@
 #include "intel_cdclk.h"
 #include "intel_color.h"
 #include "intel_display_types.h"
+#include "intel_dp_link_training.h"
 #include "intel_fbc.h"
 #include "intel_fbdev.h"
 #include "intel_fifo_underrun.h"

drivers/gpu/drm/i915/display/intel_display.h

@@ -27,7 +27,6 @@
 
 #include <drm/drm_util.h>
 #include <drm/i915_drm.h>
-#include "intel_dp_link_training.h"
 
 enum link_m_n_set;
 struct dpll;