The profile already left backlightPin unset, but the comment still described
the IR illuminator control as unresolved, which read as unfinished work rather
than as a board fact.
Hardware confirms the illuminator is driven by the board's own daylight-sensor
circuitry. The SoC only observes the resulting light state on GPIO3_0 and
drives the bistable IR-cut filter on GPIO34/33, so there is no SoC-controlled
backlight GPIO to configure here.
Documentation only; runtime configuration is unchanged. This retires the last
caveat the original SVI-252B K202 profile shipped with.
