Record acpi_hmat_proximity_domain

struct acpi_hmat_proximity_domain {
  struct acpi_hmat_entry_hdr hdr;
  uacpi_u16 flags;
  uacpi_u16 rsvd0;
  uacpi_u32 initiator_proximity_domain;
  uacpi_u32 memory_proximity_domain;
  uacpi_u32 rsvd1;
  /* Full declaration omitted */ 
}