anv: implement VK_EXT_pipeline_creation_feedback

An extension reporting cache hit in the user supplied pipeline cache
as well as timing information for creating the pipelines & stages.

v2: Don't consider no cache for cache hits (Jason)
    Rework duration accumulation (Jason)

v3: Fold feedback creation writing into pipeline compile functions (Jason/Lionel)

v4: Get cache hit information from anv_device_search_for_kernel() (Jason)
    Only set cache hit from the whole pipeline if all stages also have that bit (Lionel)

v5: Always user_cache_hit in anv_device_search_for_kernel() (Jason)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/intel/vulkan/anv_pipeline_cache.c

@@ -611,14 +611,19 @@ VkResult anv_MergePipelineCaches(
 struct anv_shader_bin *
 anv_device_search_for_kernel(struct anv_device *device,
                              struct anv_pipeline_cache *cache,
-                             const void *key_data, uint32_t key_size)
+                             const void *key_data, uint32_t key_size,
+                             bool *user_cache_hit)
 {
    struct anv_shader_bin *bin;
 
+   *user_cache_hit = false;
+
    if (cache) {
       bin = anv_pipeline_cache_search(cache, key_data, key_size);
-      if (bin)
+      if (bin) {
+         *user_cache_hit = true;
          return bin;
+      }
    }
 
 #ifdef ENABLE_SHADER_CACHE