Implement the VK_KHR_swapchain_mutable_format device extension in the vulkan loader

Add an implementation for the VK_KHR_swapchain_mutable_format extension.

Test: Stepped through changes in debugger
Test: Ran sample app with VVL which used the extension
Test: Ran dEQP-VK.image.swapchain_mutable.android.* dEQP tests
Flag: com.android.graphics.libvulkan.flags.swapchain_mutable_format_ext
Bug: 341978292
Change-Id: Ib0e5b9f750cd5a94ab65419542898db207716fcc
diff --git a/vulkan/scripts/api_generator.py b/vulkan/scripts/api_generator.py
index be24172..001af20 100644
--- a/vulkan/scripts/api_generator.py
+++ b/vulkan/scripts/api_generator.py
@@ -61,6 +61,9 @@
 
 #include "driver_gen.h"
 
+/*
+ * This file is autogenerated by api_generator.py. Do not edit directly.
+ */
 namespace vulkan {
 namespace api {
 
@@ -283,6 +286,9 @@
 #undef VK_NO_PROTOTYPES
 #include "api.h"
 
+/*
+ * This file is autogenerated by api_generator.py. Do not edit directly.
+ */
 namespace vulkan {
 namespace api {