tu: Set up glsl types.

tu: Set up glsl types.

Addresses this assert:

deqp-vk: ../mesa-freedreno-9999/src/compiler/glsl_types.cpp:1244: static const glsl_type *glsl_type::get_interface_instance(const glsl_struct_field *, unsigned int, enum glsl_interface_packing, bool, const char *): Assertion `glsl_type_users > 0' failed.

running dEQP-VK.api.smoke.triangle .

Fixes: 624789e3708 "compiler/glsl: handle case where we have multiple users for types"
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>