Add support for intel HRESET instructions.

[Jan Beulich]

On 13.10.2020 09:52, Cui, Lili wrote:
> @@ -889,7 +892,7 @@ typedef struct insn_template
>  
>    /* base_opcode is the fundamental opcode byte without optional
>       prefix(es).  */
> -  unsigned int base_opcode;
> +  unsigned long long base_opcode;

I think we should try to avoid this by (about) all means. I realize
this will mean some more extensive rework of how opcodes are
stored, but the way this is done is already pretty inefficient, and
things get only worse by this widening of the field.

Jan