v1.31

Raspberry Pi 3 UEFI Firmware v1.31

• Add CM3 Device Tree binary
• Add IORT ACPI table [tianocore/edk2-platforms@dac891d]
• Fix incorrectly mapped 640x480 and 800x600 display resolutions [tianocore/edk2-platforms@38c387d]
• Update JTAG pinout [tianocore/edk2-platforms@8ef23e8]