ARM: dts: msm: update the DisplayPort AUX settings for sm8150

Update the DisplayPort AUX settings to the latest recommended
values from the hardware programming guide. This is necessary
to ensure that the PHY is programmed correctly in order to
enable AUX transactions once the cable is plugged in.

Change-Id: I493f29d16f151062d22f7435ee07271c8ef791d7
Signed-off-by: Tatenda Chipeperekwa <tatendac@codeaurora.org>