linux/hdmi: Fix size of product id.

linux/hdmi: Fix return value in unpack.

linux/hdmi: Fix hdmi_infoframe_unpack to record the unpacked header.

linux/hdmi: Handle audio infoframes in hdmi_infoframe_pack.

Sort cases by type number.

linux/hdmi: Convert failure branch to kassert for internal invariant.

linux/hdmi: Use ssize_t for all hdmi_*_infoframe_pack functions.

linux/hdmi: Zero entire union hdmi_infoframe on unpack.

Don't just zero the part that we're about to initialize -- i915 does
memcmp on the whole structure.

linux/hdmi: Handle unpacking audio frames too. Sort by number.

linux/hdmi: Make some private functions static.

linux/hdmi.h: Split out logic into .c file.

Shoulda done this ages ago.