Record acpi_gtdt_timer

struct acpi_gtdt_timer {
  struct acpi_gtdt_entry_hdr hdr;
  uacpi_u8 rsvd;
  uacpi_u64 cnt_ctl_base;
  uacpi_u32 timer_count;
  uacpi_u32 timer_offset;
  /* Full declaration omitted */ 
}