A couple of patches to build on the SPCR quirks support already upstreamed.
1 - Moonshot m400 cartridge has the same soc but ACPI tables have different HPe specific headers so extend quirk to understand those too. 2 - Relevant vendors do not seem to be working on DBG2/SPCR update for situation where the clock is unknown. We want these machines to boot with console initialised from SPCR before I die of old age so use the previous quirk handling to also handle the clock problem as well. Thanks Graeme
