drm/radeon: update mode_valid testing for DP
drm/radeon: update mode_valid testing for DP

When we have a passive adapter validate the clocks
against the HMDI/DVI limits.

Signed-off-by: Alex Deucher <08dc22c6156113f2deff178e35e3ed9b24d6af9e@amd.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs