scripts: Add support for uint32_t return types

Change-Id: I98fbaed18ed3554f63a273bcd20aa9b7f2ccb536
diff --git a/scripts/layer_chassis_generator.py b/scripts/layer_chassis_generator.py
index 8bf1b10..67cde89 100644
--- a/scripts/layer_chassis_generator.py
+++ b/scripts/layer_chassis_generator.py
@@ -1057,6 +1057,7 @@
             'VkDeviceAddress': 'return 0;',
             'VkResult': 'return VK_ERROR_VALIDATION_FAILED_EXT;',
             'void': 'return;',
+            'uint32_t': 'return 0;'
             }
         resulttype = cmdinfo.elem.find('proto/type')
         assignresult = ''