[SPIR-V] Add SPIR-V builtin definitions to the builtin lookup.

Added OpenCL SPIR-V extended set builtins bindings and
part of the core SPIR-V (mostly missing Images and Pipes)

Known vendor extensions are not implemented yet.

Signed-off-by: Victor Lomuller <victor@codeplay.com>
Co-Authored-By: Alexey Bader <alexey.bader@intel.com>

Author: Naghasan