ACPICA: acpidump: Add ACPI 1.0 RSDP support.

The acpidump currently always uses ACPI 2.0 format to dump RSDP, this patch
adds ACPI 1.0 RSDP support.

Link: https://bugs.acpica.org/show_bug.cgi?id=1097
Link: https://bugs.acpica.org/show_bug.cgi?id=1103
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reported-and-tested-by: Rudolf Marek <r.marek@assembler.cz>
Reported-and-tested-by: Rafal <fatwildcat@gmail.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/actables.h

@@ -49,6 +49,8 @@ acpi_status acpi_allocate_root_table(u32 initial_table_count);
 /*
  * tbxfroot - Root pointer utilities
  */
+u32 acpi_tb_get_rsdp_length(struct acpi_table_rsdp *rsdp);
+
 acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp);
 
 u8 *acpi_tb_scan_memory_for_rsdp(u8 *start_address, u32 length);