drm/i915/dsi: split out icl_dsi.h

Follow the convention of corresponding .h for .c.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211122111504.223248-4-jani.nikula@intel.com

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

@@ -28,6 +28,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_mipi_dsi.h>
 
+#include "icl_dsi.h"
 #include "intel_atomic.h"
 #include "intel_backlight.h"
 #include "intel_combo_phy.h"

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

+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __ICL_DSI_H__
+#define __ICL_DSI_H__
+
+struct drm_i915_private;
+struct intel_crtc_state;
+
+void icl_dsi_init(struct drm_i915_private *i915);
+void icl_dsi_frame_update(struct intel_crtc_state *crtc_state);
+
+#endif /* __ICL_DSI_H__ */

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

@@ -14,7 +14,7 @@
 
 #include "i915_trace.h"
 #include "i915_vgpu.h"
-
+#include "icl_dsi.h"
 #include "intel_atomic.h"
 #include "intel_atomic_plane.h"
 #include "intel_color.h"

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

@@ -73,6 +73,7 @@
 #include "g4x_dp.h"
 #include "g4x_hdmi.h"
 #include "i915_drv.h"
+#include "icl_dsi.h"
 #include "intel_acpi.h"
 #include "intel_atomic.h"
 #include "intel_atomic_plane.h"

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

@@ -166,11 +166,6 @@ static inline u16 intel_dsi_encoder_ports(struct intel_encoder *encoder)
 	return enc_to_intel_dsi(encoder)->ports;
 }
 
-/* icl_dsi.c */
-void icl_dsi_init(struct drm_i915_private *dev_priv);
-void icl_dsi_frame_update(struct intel_crtc_state *crtc_state);
-
-/* intel_dsi.c */
 int intel_dsi_bitrate(const struct intel_dsi *intel_dsi);
 int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi);
 enum drm_panel_orientation