drm/i915/hdmi: split infoframe setting from infoframe type code

This makes it easier to add support for other infoframes (e.g. SPD,
vendor specific).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>

diff --cc drivers/gpu/drm/i915/i915_reg.h
Simple merge

diff --cc drivers/gpu/drm/i915/intel_drv.h
Simple merge

diff --cc drivers/gpu/drm/i915/intel_hdmi.c
Simple merge