msm: mdss: dp: featurize MDSS display port configuration settings

Display port settings for logical to physical lane mapping and AUX
configurations are different between msm8998 and SDM660. Add support
to parse these settings from MDSS DT file. Add the relevant settings
for the same in msm8998 MDSS device tree node.

Change-Id: I5046b2523928e34ef42924f495dfc754d9ac6ea7
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
Signed-off-by: Vishnuvardhan Prodduturi <vproddut@codeaurora.org>