mfd1997x: show colorimetry via sysfs colorspace

Show colorimetry info as well as colorspace.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
mxc: output: always use IC

Disable an optimization that disables the Image Converter (IC) if it
thinks its not needed. This resolves invalid output when input resolution
is the same as the output resolution.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>