We're currently duplicating the DFP min/max TMDS clock checks
in .mode_valid() and .compute_config(). Extract a helper suitable
for both use cases.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220322120015.28074-2-ville.syrjala@linux.intel.comReviewed-by: Uma Shankar <uma.shankar@intel.com>