drm/amd/display: Extend Freesync over PCon support for more devices

[why]
More branch devices are able to support Freesync
over PCon so include them in the list of supporting devices.

[how]
Add more compatible PCon devices in the whitelist
for Freesync over Pcon.

Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Sung Joon Kim <sungjoon.kim@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>