layers:Update parameter validation for gpdp2
layers:Update parameter validation for gpdp2

Update get_physical_device_properties2 parameter validation:
-Allow new pNext down CreateDevice struct
-Add some post-call validation when querying image formats
-Rename skip_call to skip

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools