gfxstream: Clean up VK_KHR_external_memory_fd support for Linux

BUG=333133323
TEST=launch_cvd --gpu_mode=gfxstream_guest_angle

Change-Id: I3e884c632e6752ed87b91c5b9f44daa3303ead89
diff --git a/guest/vulkan_enc/ResourceTracker.h b/guest/vulkan_enc/ResourceTracker.h
index bda7d91..a93c369 100644
--- a/guest/vulkan_enc/ResourceTracker.h
+++ b/guest/vulkan_enc/ResourceTracker.h
@@ -272,6 +272,9 @@
 
     VkResult on_vkGetMemoryFdKHR(void* context, VkResult input_result, VkDevice device,
                                  const VkMemoryGetFdInfoKHR* pGetFdInfo, int* pFd);
+    VkResult on_vkGetMemoryFdPropertiesKHR(void* context, VkResult input_result, VkDevice device,
+                                           VkExternalMemoryHandleTypeFlagBits handleType, int fd,
+                                           VkMemoryFdPropertiesKHR* pMemoryFdProperties);
 
 #ifdef VK_USE_PLATFORM_FUCHSIA
     VkResult on_vkGetMemoryZirconHandleFUCHSIA(void* context, VkResult input_result,