disp: msm: dp: update swing and pre-emp with new hardware settings

Update the DP controller and PHY programming according to
the new hardware recommendations.

CRs-Fixed: 2458753
Change-Id: I1bce5915ba6ebbb250cc5c4aac907b0b287eece7
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>