intel/compiler: Rotate instructions ROR and ROL cannot have source modifiers

intel/compiler: Rotate instructions ROR and ROL cannot have source modifiers

I checked the Bspec for both Gen11 and Gen12, and it appears that rotate
instructions cannot have source modifiers or saturate modifer.  Saturate
was already handled.

Fixes: 1e92e83856b ("intel/compiler: Emit ROR and ROL instruction")
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7650>