ARM: dts: msm: Add RUMI PHY init and reset sequence for msmtitanium

On RUMI platform, external QRBTC PHY card will be used for USB
communication for msmtitanium. so, it is required to initialize
external QRBTC PHY and reset it. Hence add required PHY init
and reset sequence for msmtitanium on RUMI platform for USB enumeration
to be working.

Change-Id: I07dbaee3907ba5528258833d70f5d5a1ee0eb112
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>