loader: Add support for NV instance extension

Added vkGetPhysicalDeviceExternalImageFormat API from the
VK_NV_external_memory_capabilities extension to the loader.

Change-Id: Ib87df7bae333d7944a4e181556bc2f99e1e19416
diff --git a/loader/table_ops.h b/loader/table_ops.h
index 8a5f8df..f527f6a 100644
--- a/loader/table_ops.h
+++ b/loader/table_ops.h
@@ -584,6 +584,9 @@
     table->GetPhysicalDeviceSurfacePresentModesKHR =
         (PFN_vkGetPhysicalDeviceSurfacePresentModesKHR)gpa(
             inst, "vkGetPhysicalDeviceSurfacePresentModesKHR");
+    table->GetPhysicalDeviceExternalImageFormatPropertiesNV =
+        (PFN_vkGetPhysicalDeviceExternalImageFormatPropertiesNV)gpa(
+            inst, "vkGetPhysicalDeviceExternalImageFormatPropertiesNV");
 #ifdef VK_USE_PLATFORM_MIR_KHR
     table->CreateMirSurfaceKHR =
         (PFN_vkCreateMirSurfaceKHR)gpa(inst, "vkCreateMirSurfaceKHR");
@@ -684,6 +687,8 @@
         return (void *)table->GetPhysicalDeviceSurfaceFormatsKHR;
     if (!strcmp(name, "GetPhysicalDeviceSurfacePresentModesKHR"))
         return (void *)table->GetPhysicalDeviceSurfacePresentModesKHR;
+    if (!strcmp(name, "GetPhysicalDeviceExternalImageFormatPropertiesNV"))
+        return (void *)table->GetPhysicalDeviceExternalImageFormatPropertiesNV;
 #ifdef VK_USE_PLATFORM_MIR_KHR
     if (!strcmp(name, "CreateMirSurfaceKHR"))
         return (void *)table->CreateMirSurfaceKHR;