[Intel-gfx] [PATCH 0/2] enable broadcast RGB mode for hdtv(v3)

[Ma Ling]

Almost all digital TVs accept broadcast RGB values from 16 to 235 for each channel,
otherwise for those uncompensated videos, when RGB values are set from 0 to 255,
they will shows black and whiter clamping, which seriously degrades picture quality.
The patch will enable the broadcast RGB mode for hdtv according to user's setting.
It fixed bug #14486

[PATCH 1/2] set broadcast RGB mode for HDMI and TMDS from SDVOX output
[PATCH 2/2] set broadcast RGB mode for HDMI from integrated HDMI output.