v1.7

Raspberry Pi 4 UEFI Firmware v1.7

• Fix ACPI interrupt values [tianocore/edk2-platforms@f8b5562]
• Improve ACPI tables [tianocore/edk2-platforms@c03fe68, tianocore/edk2-platforms@fcc2a81, etc.]
• Add PPTT ACPI table [tianocore/edk2-platforms@6beb169]