drm/msm/dp: check for receptacle/plug state

The pin configurations for receptacle and plug DisplayPort
devices are different and are made available separately for
a DisplayPort upstream device.
Use correct pin configurations based on receptacle indicator
bit in DisplayPort Capabilities Vendor Defined Object to
avoid configuring DisplayPort in wrong pin configuration.

CRs-Fixed: 2098211
Change-Id: I357f094f42f4290caf2f992e3936b99f81a669c6
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>