drm/i915: Make wopcm_to_i915() private

No need to define it globally as we're only using it in wopcm.c
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190807170034.8440-6-michal.wajdeczko@intel.com

drivers/gpu/drm/i915/i915_drv.h

@@ -1902,11 +1902,6 @@ static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
 	return pci_get_drvdata(pdev);
 }
 
-static inline struct drm_i915_private *wopcm_to_i915(struct intel_wopcm *wopcm)
-{
-	return container_of(wopcm, struct drm_i915_private, wopcm);
-}
-
 /* Simple iterator over all initialised engines */
 #define for_each_engine(engine__, dev_priv__, id__) \
 	for ((id__) = 0; \

drivers/gpu/drm/i915/intel_wopcm.c

@@ -64,6 +64,11 @@
 #define GEN9_GUC_FW_RESERVED	SZ_128K
 #define GEN9_GUC_WOPCM_OFFSET	(GUC_WOPCM_RESERVED + GEN9_GUC_FW_RESERVED)
 
+static inline struct drm_i915_private *wopcm_to_i915(struct intel_wopcm *wopcm)
+{
+	return container_of(wopcm, struct drm_i915_private, wopcm);
+}
+
 /**
  * intel_wopcm_init_early() - Early initialization of the WOPCM.
  * @wopcm: pointer to intel_wopcm.