ARM: dts: msm: rename attributes to more generic names

In this change the "compatible" attribute in dts files of ufsphy node
and the "phy-names" attribute in ufs node are changed to a more generic
name.
This is done for apq8084 and for msm8994 targets.

Change-Id: I46176459e9bc877456489e4728b86eecb2c16261
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
[subhashj@codeaurora.org: resolved merge conflicts & dropped changes to
apq8084.dtsi & msm8994.dtsi]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>