ARM: dts: msm: add embedded UFS support to Kona platforms

This change adds the embedded UFS related nodes and properties to Kona
device trees to support embedded UFS devices on Kona platforms.

Change-Id: I99c75a7b6cac44b61e142c01a9d7712b5377bc95
Signed-off-by: Can Guo <cang@codeaurora.org>