drm/i915/gvt: Add missing symbol export.

When CONFIG_DRM_I915_DEBUG_RUNTIME and CONFIG_DRM_I915_DEBUG_PM
are enabled, two more extra symols in i915 are required to be
exported.

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220425220331.24865-1-zhi.a.wang@intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/intel_gvt.c

@@ -309,6 +309,7 @@ EXPORT_SYMBOL_NS_GPL(__intel_context_do_pin, I915_GVT);
 EXPORT_SYMBOL_NS_GPL(__intel_context_do_unpin, I915_GVT);
 EXPORT_SYMBOL_NS_GPL(intel_ring_begin, I915_GVT);
 EXPORT_SYMBOL_NS_GPL(intel_runtime_pm_get, I915_GVT);
+EXPORT_SYMBOL_NS_GPL(intel_runtime_pm_put, I915_GVT);
 EXPORT_SYMBOL_NS_GPL(intel_runtime_pm_put_unchecked, I915_GVT);
 EXPORT_SYMBOL_NS_GPL(intel_uncore_forcewake_for_reg, I915_GVT);
 EXPORT_SYMBOL_NS_GPL(intel_uncore_forcewake_get, I915_GVT);
@@ -316,3 +317,4 @@ EXPORT_SYMBOL_NS_GPL(intel_uncore_forcewake_put, I915_GVT);
 EXPORT_SYMBOL_NS_GPL(shmem_pin_map, I915_GVT);
 EXPORT_SYMBOL_NS_GPL(shmem_unpin_map, I915_GVT);
 EXPORT_SYMBOL_NS_GPL(__px_dma, I915_GVT);
+EXPORT_SYMBOL_NS_GPL(i915_fence_ops, I915_GVT);