i965: Refactor intel_set_texture_image_bo() to create_mt_for_dri_image()

This function now only creates the mt and we then call
intel_set_texture_image_mt() in intel_image_target_texture_2d() to set
it for the texture image.

Reviewed-by: Chad Versace <chad.versace@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
1 file changed