ARM: dts: apq: Update USB PHY init for APQ8096 DragonBoard

The APQ8096 DragonBoard platform has an additional SOM to Carrier
board connector and longer traces compared to other platforms.
This requires an update to the USB PHY initialization sequence,
to increase the TX output level and enable pre-emphasis to the
amplitude.
Additionally, set LDO16 to be on to support GPS LNA.

Change-Id: I8d09415fead9b30d8c36bcc73c7c9b1a29ef302e
Signed-off-by: Liron Kuch <lkuch@codeaurora.org>