drm/i915: make hsw_{disable, restore}_lcpll static

These functions were added before the final PC8 implementation, and
their callers moved to intel_display.c during the code review.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_display.c

@@ -6157,7 +6157,7 @@ static void assert_can_disable_lcpll(struct drm_i915_private *dev_priv)
  * register. Callers should take care of disabling all the display engine
  * functions, doing the mode unset, fixing interrupts, etc.
  */
-void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
+static void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
 			      bool switch_to_fclk, bool allow_power_down)
 {
 	uint32_t val;
@@ -6208,7 +6208,7 @@ void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
  * Fully restores LCPLL, disallowing power down and switching back to LCPLL
  * source.
  */
-void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
+static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
 {
 	uint32_t val;
 

drivers/gpu/drm/i915/intel_drv.h

@@ -675,9 +675,6 @@ extern unsigned long intel_gen4_compute_page_offset(int *x, int *y,
 						    unsigned int bpp,
 						    unsigned int pitch);
 extern void intel_display_handle_reset(struct drm_device *dev);
-extern void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
-			      bool switch_to_fclk, bool allow_power_down);
-extern void hsw_restore_lcpll(struct drm_i915_private *dev_priv);
 extern void hsw_enable_pc8_work(struct work_struct *__work);
 extern void hsw_enable_package_c8(struct drm_i915_private *dev_priv);
 extern void hsw_disable_package_c8(struct drm_i915_private *dev_priv);