drm/vc4: Make vc4_crtc_get_encoder public

We'll need that function in vc4_kms to compute the core clock rate
requirements.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20211025152903.1088803-4-maxime@cerno.tech

drivers/gpu/drm/vc4/vc4_crtc.c

@@ -281,10 +281,10 @@ static u32 vc4_crtc_get_fifo_full_level_bits(struct vc4_crtc *vc4_crtc,
  * allows drivers to push pixels to more than one encoder from the
  * same CRTC.
  */
-static struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
-						struct drm_atomic_state *state,
-						struct drm_connector_state *(*get_state)(struct drm_atomic_state *state,
-											 struct drm_connector *connector))
+struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
+					 struct drm_atomic_state *state,
+					 struct drm_connector_state *(*get_state)(struct drm_atomic_state *state,
+										  struct drm_connector *connector))
 {
 	struct drm_connector *connector;
 	struct drm_connector_list_iter conn_iter;

drivers/gpu/drm/vc4/vc4_drv.h

@@ -517,6 +517,11 @@ vc4_crtc_to_vc4_pv_data(const struct vc4_crtc *crtc)
 	return container_of(data, struct vc4_pv_data, base);
 }
 
+struct drm_encoder *vc4_get_crtc_encoder(struct drm_crtc *crtc,
+					 struct drm_atomic_state *state,
+					 struct drm_connector_state *(*get_state)(struct drm_atomic_state *state,
+										  struct drm_connector *connector));
+
 struct vc4_crtc_state {
 	struct drm_crtc_state base;
 	/* Dlist area for this CRTC configuration. */