drm/i915/bw: make intel_atomic_get_bw_state() static

No need for this function to be accessible outside of intel_bw.c. Avoid
including the i915_drv.h mega header from other header files to make
further header cleanup easier.
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6c898ec6511af47c1c5b679e516dc757cd207146.1565085691.git.jani.nikula@intel.com

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

@@ -322,6 +322,20 @@ static unsigned int intel_bw_data_rate(struct drm_i915_private *dev_priv,
 	return data_rate;
 }
 
+static struct intel_bw_state *
+intel_atomic_get_bw_state(struct intel_atomic_state *state)
+{
+	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
+	struct drm_private_state *bw_state;
+
+	bw_state = drm_atomic_get_private_obj_state(&state->base,
+						    &dev_priv->bw_obj);
+	if (IS_ERR(bw_state))
+		return ERR_CAST(bw_state);
+
+	return to_intel_bw_state(bw_state);
+}
+
 int intel_bw_atomic_check(struct intel_atomic_state *state)
 {
 	struct drm_i915_private *dev_priv = to_i915(state->base.dev);

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

@@ -8,7 +8,6 @@
 
 #include <drm/drm_atomic.h>
 
-#include "i915_drv.h"
 #include "intel_display.h"
 
 struct drm_i915_private;
@@ -24,20 +23,6 @@ struct intel_bw_state {
 
 #define to_intel_bw_state(x) container_of((x), struct intel_bw_state, base)
 
-static inline struct intel_bw_state *
-intel_atomic_get_bw_state(struct intel_atomic_state *state)
-{
-	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
-	struct drm_private_state *bw_state;
-
-	bw_state = drm_atomic_get_private_obj_state(&state->base,
-						    &dev_priv->bw_obj);
-	if (IS_ERR(bw_state))
-		return ERR_CAST(bw_state);
-
-	return to_intel_bw_state(bw_state);
-}
-
 void intel_bw_init_hw(struct drm_i915_private *dev_priv);
 int intel_bw_init(struct drm_i915_private *dev_priv);
 int intel_bw_atomic_check(struct intel_atomic_state *state);