scripts: Add support for Vulkan 1.2 codegen

Change-Id: I37985dae01a0d17d02d3ba8e8a290cb2d155239b
diff --git a/scripts/loader_extension_generator.py b/scripts/loader_extension_generator.py
index e3f6a00..baad5d3 100644
--- a/scripts/loader_extension_generator.py
+++ b/scripts/loader_extension_generator.py
@@ -66,6 +66,7 @@
                          'vkGetDeviceGroupSurfacePresentModes2EXT']
 
 ALIASED_CMDS = {
+    # 1.1 aliases
     'vkEnumeratePhysicalDeviceGroupsKHR':                   'vkEnumeratePhysicalDeviceGroups',
     'vkGetPhysicalDeviceFeatures2KHR':                      'vkGetPhysicalDeviceFeatures2',
     'vkGetPhysicalDeviceProperties2KHR':                    'vkGetPhysicalDeviceProperties2',
@@ -77,6 +78,21 @@
     'vkGetPhysicalDeviceExternalBufferPropertiesKHR':       'vkGetPhysicalDeviceExternalBufferProperties',
     'vkGetPhysicalDeviceExternalSemaphorePropertiesKHR':    'vkGetPhysicalDeviceExternalSemaphoreProperties',
     'vkGetPhysicalDeviceExternalFencePropertiesKHR':        'vkGetPhysicalDeviceExternalFenceProperties',
+    
+    # 1.2 aliases
+    'vkCreateRenderPass2KHR':                               'vkCreateRenderPass2',
+    'vkCmdBeginRenderPass2KHR':                             'vkCmdBeginRenderPass2',
+    'vkCmdNextSubpass2KHR':                                 'vkCmdNextSubpass2',
+    'vkCmdEndRenderPass2KHR':                               'vkCmdEndRenderPass2',
+    'vkCmdDrawIndirectCountKHR':                            'vkCmdDrawIndirectCount',
+    'vkCmdDrawIndexedIndirectCountKHR':                     'vkCmdDrawIndexedIndirectCount',
+    'vkGetSemaphoreCounterValueKHR':                        'vkGetSemaphoreCounterValue',
+    'vkWaitSemaphoresKHR':                                  'vkWaitSemaphores',
+    'vkSignalSemaphoreKHR':                                 'vkSignalSemaphore',
+    'vkGetBufferDeviceAddressKHR':                          'vkGetBufferDeviceAddress',
+    'vkGetBufferOpaqueCaptureAddressKHR':                   'vkGetBufferOpaqueCaptureAddress',
+    'vkGetDeviceMemoryOpaqueCaptureAddressKHR':             'vkGetDeviceMemoryOpaqueCaptureAddress',
+    'vkResetQueryPoolEXT':                                  'vkResetQueryPool',
 }
 
 PRE_INSTANCE_FUNCTIONS = ['vkEnumerateInstanceExtensionProperties',