layers: Migrate image layer CmdClearColorImage

The image layer checks for this API were moved to the
buffer_validation module and a call was added to CV.

Change-Id: I04b23843519d2354c952afebc3a3428b196339e3
diff --git a/layers/buffer_validation.h b/layers/buffer_validation.h
index b2d5274..653057a 100644
--- a/layers/buffer_validation.h
+++ b/layers/buffer_validation.h
@@ -40,4 +40,6 @@
 bool PreCallValidateDestroyImage(core_validation::layer_data *device_data, VkImage image, IMAGE_STATE **image_state,
                                  VK_OBJECT *obj_struct);
 
+bool ValidateImageAttributes(core_validation::layer_data *device_data, IMAGE_STATE *image_state, VkImageSubresourceRange range);
+
 #endif  // CORE_VALIDATION_BUFFER_VALIDATION_H_