sdm: Always apply color mode

When applying color transforms if the requested color
mode is not present the client calls set mode identity
and applies the transformation matrix.
When the transform is reset the identity mode must be
re-applied, having this check will not apply the mode and
reset the transform

Change-Id: Iae98b41f8b95b1464ff840d4165987a6b60dba5f
Crs-fixed: 1035477
2 files changed