layers: NV_dedicated_allocation support for unique_objects

Add ID substitution support for the
VkDedicatedAllocationMemoryAllocateInfoNV extension structure to the
unique_objects layer.  The current implementation is specific to the
case where the vkAllocateMemory pAllocateInfo parameter references
a single VkDedicatedAllocationMemoryAllocateInfoNV struct.

Issues-Addressed: GitHub #755
Change-Id: I33c3f00d32149044694ecafe808673e5d90107b4
diff --git a/vk-layer-generate.py b/vk-layer-generate.py
index 29b3281..bde7e34 100755
--- a/vk-layer-generate.py
+++ b/vk-layer-generate.py
@@ -1557,6 +1557,7 @@
                                              'DestroyInstance',
                                              'CreateDevice',
                                              'DestroyDevice',
+                                             'AllocateMemory',
                                              'CreateComputePipelines',
                                              'CreateGraphicsPipelines',
                                              'GetPhysicalDeviceDisplayPropertiesKHR',