x86/HVM: type adjustments

x86/HVM: type adjustments

- constify struct hvm_trap * function parameters
- width reduce and shuffle some struct hvm_trap members
- use bool_t for boolean fields struct hvm_function_table
- use unsigned for struct hvm_function_table's hap_capabilities field

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Boris Ostrovsky<boris.ostrovsky@oracle.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>