loader: Remove executable stack from libvulkan.so
loader: Remove executable stack from libvulkan.so

Change-Id: Id77d5560479cbbc6f5453a6362c5a20dd721fdd0

KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers