Hook the VK_KHR_incremental_present extension

Test: Ran the CTS tests

Small oversight when first implemented.

Change-Id: I9d4804aea3c986c49d69bc1f56b81127553f7863
diff --git a/vulkan/libvulkan/driver.cpp b/vulkan/libvulkan/driver.cpp
index a46f46e..ba39b5e 100644
--- a/vulkan/libvulkan/driver.cpp
+++ b/vulkan/libvulkan/driver.cpp
@@ -467,6 +467,7 @@
                 name = VK_ANDROID_NATIVE_BUFFER_EXTENSION_NAME;
                 ext_bit = ProcHook::ANDROID_native_buffer;
                 break;
+            case ProcHook::KHR_incremental_present:
             case ProcHook::GOOGLE_display_timing:
                 hook_extensions_.set(ext_bit);
                 // return now as these extensions do not require HAL support