ACPICA: infrastructure: Add new DMT_BUF types and shorten a long name

ACPICA commit b8713f71b4023a0396fe61503bbbf5226e5eed1b

Some ERDT subtables have 11 and 24 byte reserved fields.

Add the ACPI_DMT_BUF11 and ACPI_DMT_BUF24 types to describe these reserved
fields in struct acpi_dmtable_info structures.

Shorten the ACPI_SUBTABLE_HEADER_16 name to ACPI_SUBTBL_HDR

Link: https://github.com/acpica/acpica/commit/b8713f71


Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3643286.iIbC2pHGDl@rjwysocki.net