vulkan: Implement KHR_get_surface_capabilities2

Implemented by forwarding to the KHR_surface equivalents. This requires
a bit of rejigging in the case of GetPhysicalDeviceSurfaceFormats2KHR
to deal with the stride difference.

Change-Id: I0f1cc83cfc885955a39fc02d4a15609e83d36798
Test: dEQP-VK.wsi.android.surface.*2
diff --git a/vulkan/libvulkan/driver.cpp b/vulkan/libvulkan/driver.cpp
index b62eec6..dbb217d 100644
--- a/vulkan/libvulkan/driver.cpp
+++ b/vulkan/libvulkan/driver.cpp
@@ -448,6 +448,7 @@
             case ProcHook::KHR_android_surface:
             case ProcHook::KHR_surface:
             case ProcHook::EXT_swapchain_colorspace:
+            case ProcHook::KHR_get_surface_capabilities2:
                 hook_extensions_.set(ext_bit);
                 // return now as these extensions do not require HAL support
                 return;
@@ -674,13 +675,15 @@
     const char* pLayerName,
     uint32_t* pPropertyCount,
     VkExtensionProperties* pProperties) {
-    static const std::array<VkExtensionProperties, 3> loader_extensions = {{
+    static const std::array<VkExtensionProperties, 4> loader_extensions = {{
         // WSI extensions
         {VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_SURFACE_SPEC_VERSION},
         {VK_KHR_ANDROID_SURFACE_EXTENSION_NAME,
          VK_KHR_ANDROID_SURFACE_SPEC_VERSION},
         {VK_EXT_SWAPCHAIN_COLOR_SPACE_EXTENSION_NAME,
          VK_EXT_SWAPCHAIN_COLOR_SPACE_SPEC_VERSION},
+        {VK_KHR_GET_SURFACE_CAPABILITIES_2_EXTENSION_NAME,
+         VK_KHR_GET_SURFACE_CAPABILITIES_2_SPEC_VERSION},
     }};
     static const VkExtensionProperties loader_debug_report_extension = {
         VK_EXT_DEBUG_REPORT_EXTENSION_NAME, VK_EXT_DEBUG_REPORT_SPEC_VERSION,