drm/i915/sprite: un-inline icl_is_hdr_plane()

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/5f998c72018c0f1cc5cdb239327a1281d21f4c0e.1565085691.git.jani.nikula@intel.com

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

@@ -330,6 +330,12 @@ int intel_plane_check_src_coordinates(struct intel_plane_state *plane_state)
 	return 0;
 }
 
+bool icl_is_hdr_plane(struct drm_i915_private *dev_priv, enum plane_id plane_id)
+{
+	return INTEL_GEN(dev_priv) >= 11 &&
+		icl_hdr_plane_mask() & BIT(plane_id);
+}
+
 static unsigned int
 skl_plane_max_stride(struct intel_plane *plane,
 		     u32 pixel_format, u64 modifier,

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

@@ -8,7 +8,6 @@
 
 #include <linux/types.h>
 
-#include "i915_drv.h"
 #include "intel_display.h"
 
 struct drm_device;
@@ -49,11 +48,6 @@ static inline u8 icl_hdr_plane_mask(void)
 		BIT(PLANE_SPRITE0) | BIT(PLANE_SPRITE1);
 }
 
-static inline bool icl_is_hdr_plane(struct drm_i915_private *dev_priv,
-				    enum plane_id plane_id)
-{
-	return INTEL_GEN(dev_priv) >= 11 &&
-		icl_hdr_plane_mask() & BIT(plane_id);
-}
+bool icl_is_hdr_plane(struct drm_i915_private *dev_priv, enum plane_id plane_id);
 
 #endif /* __INTEL_SPRITE_H__ */