drm/i915/hdmi: Prune modes that require HDMI2.1 FRL

HDMI2.1 requires some higher resolution video modes to be enumerated
only if HDMI2.1 Fixed Rate Link (FRL) is supported.
Current platforms do not support FRL transmission so prune modes that
require HDMI2.1 FRL.

v2: Fixed the condition to check for dotclock > 600.
Return MODE_CLOCK_HIGH as mode status.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com> (v1)
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220721084645.3411219-1-ankit.k.nautiyal@intel.com