intel/tools: Require explicit regions/types for special regs

intel/tools: Require explicit regions/types for special regs

The docs say that these registers should  only be read with a certain
type, and I'm inclined to believe that the hardware behaves that way,
but it makes the assembler a little more confusing and also confuses the
user of the assembler that some operands don't take types or regions.

Just always requiring regions and types seems like the sensible thing.

Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5514>