drm/msm/dp: align the DP link CTS parameters to DRM upstream

Align the DP link CTS parameters for PHY/video/audio test pattern
and link training tests to DRM DP upstream driver.

Change-Id: Ie70a4eec9fffb0d7dbd4d03ae996d1d4bea4bdad
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>