Minor clean up/fixes of VulkanManager api version checks.

Test: manual build and run

Change-Id: I04b0ed0b6c344cc8aac662b1a2a277d1aea0cd2c
diff --git a/libs/hwui/renderthread/VulkanManager.h b/libs/hwui/renderthread/VulkanManager.h
index 7c59b6d..6702649 100644
--- a/libs/hwui/renderthread/VulkanManager.h
+++ b/libs/hwui/renderthread/VulkanManager.h
@@ -176,6 +176,7 @@
 
     VkPtr<PFN_vkDestroyInstance> mDestroyInstance;
     VkPtr<PFN_vkEnumeratePhysicalDevices> mEnumeratePhysicalDevices;
+    VkPtr<PFN_vkGetPhysicalDeviceProperties> mGetPhysicalDeviceProperties;
     VkPtr<PFN_vkGetPhysicalDeviceQueueFamilyProperties> mGetPhysicalDeviceQueueFamilyProperties;
     VkPtr<PFN_vkGetPhysicalDeviceFeatures2> mGetPhysicalDeviceFeatures2;
     VkPtr<PFN_vkCreateDevice> mCreateDevice;