This update for fwts fixes the following issues:

Update to version 21.08.00:

* lib: fwts_version.h - update to V21.08.00
* debian: update changelog
* ARM64 SMCCC firmware API tests
* bios: smm: fix indentation
* acpi: sbbr: refactor by fwts_get_fadt_version
* lib: fwts_acpi_tables: add a function to get FADT versions
* acpi: fadt: remove hard-coded FADT version
* acpi: fadt: clarify comments of FACS and HW-reduced mode
* acpi: dmar: add a warning when PCI device is not found