drm/i915: Unexport VGA switcheroo functions

They are only used in i915_drv.c so a forward declaration is enough.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drivers/gpu/drm/i915/i915_drv.c

@@ -497,6 +497,9 @@ static unsigned int i915_vga_set_decode(void *cookie, bool state)
 		return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
 }
 
+static int i915_resume_switcheroo(struct drm_device *dev);
+static int i915_suspend_switcheroo(struct drm_device *dev, pm_message_t state);
+
 static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);
@@ -1710,7 +1713,7 @@ static int i915_drm_resume_early(struct drm_device *dev)
 	return ret;
 }
 
-int i915_resume_switcheroo(struct drm_device *dev)
+static int i915_resume_switcheroo(struct drm_device *dev)
 {
 	int ret;
 

drivers/gpu/drm/i915/i915_drv.h

@@ -2759,9 +2759,6 @@ static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
 	return false;
 }
 
-extern int i915_suspend_switcheroo(struct drm_device *dev, pm_message_t state);
-extern int i915_resume_switcheroo(struct drm_device *dev);
-
 int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
 				int enable_ppgtt);