vulkan: Temporarily hack around loader/driver mismatch

A driver was built with an older declaration of
vkGetSwapchainGrallocUsage2KHR, and doesn't match what libvulkan
expects. This is a temporary workaround until the driver can be
rebuilt against the current header. When a new driver is available,
this change should be reverted.

Test: vulkanGears on affected device
Change-Id: I5a8bb16f0f9563e32314cff2a2a7a45760cfc356
diff --git a/vulkan/libvulkan/driver_gen.h b/vulkan/libvulkan/driver_gen.h
index 9f3b705..95c70f8 100644
--- a/vulkan/libvulkan/driver_gen.h
+++ b/vulkan/libvulkan/driver_gen.h
@@ -60,6 +60,7 @@
     PFN_vkDestroyInstance DestroyInstance;
     PFN_vkEnumeratePhysicalDevices EnumeratePhysicalDevices;
     PFN_vkGetInstanceProcAddr GetInstanceProcAddr;
+    PFN_vkGetPhysicalDeviceProperties GetPhysicalDeviceProperties;
     PFN_vkCreateDevice CreateDevice;
     PFN_vkEnumerateDeviceExtensionProperties EnumerateDeviceExtensionProperties;
     PFN_vkCreateDebugReportCallbackEXT CreateDebugReportCallbackEXT;