drm/i915: add dpll_info inside intel_shared_dpll

This way we can stop copying fields from dpll_info to intel_shared_dpll
one by one. The migration of each field will come on separate patches.
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180320220637.21480-3-lucas.demarchi@intel.com

drivers/gpu/drm/i915/intel_dpll_mgr.c

@@ -2410,6 +2410,7 @@ void intel_shared_dpll_init(struct drm_device *dev)
 
 	for (i = 0; dpll_info[i].id >= 0; i++) {
 		WARN_ON(i != dpll_info[i].id);
+		dev_priv->shared_dplls[i].info = &dpll_info[i];
 
 		dev_priv->shared_dplls[i].id = dpll_info[i].id;
 		dev_priv->shared_dplls[i].name = dpll_info[i].name;

drivers/gpu/drm/i915/intel_dpll_mgr.h

@@ -253,6 +253,11 @@ struct intel_shared_dpll {
 	 */
 	struct intel_shared_dpll_funcs funcs;
 
+	/**
+	 * @info: platform specific info
+	 */
+	const struct dpll_info *info;
+
 #define INTEL_DPLL_ALWAYS_ON	(1 << 0)
 	/**
 	 * @flags: