HDMI 2.0 594Mhz modes were incorrectly selecting 25.200Mhz Automatic N value
mode instead of HDMI specification values.

V2: Fix 88.2 Hz N value

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1540493521-1746-2-git-send-email-clinton.a.taylor@intel.com