layers: clang-format only, no code changes
layers: clang-format only, no code changes

clang-format of buffer_validation.cpp, layer_validation_tests.cpp

Change-Id: I98c581f6b343929f7812bf012084ad0abbb5a690

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