i965: Move brw_program_*serialize_nir to brw_program_binary.c

This will allow get_program_binary to add the gen program into its
serialization in addition to just the nir program.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
2 files changed