acpi_walk_subtables
static void acpi_walk_subtables(ACPI_TABLE_HEADER *table, void *first,
acpi_walk_subtables(sdp, (madt + 1), acpi_print_madt);
acpi_walk_subtables(sdp, (pcct + 1), acpi_print_pcct);
acpi_walk_subtables(sdp, (pptt + 1), acpi_print_pptt);
acpi_walk_subtables(sdp, (srat + 1), acpi_print_srat);