ARM: dts: msm: keep UFS card PHY regulator always on for Kona

We may see some glitch on UFS host TX when turning on/off the UFS PHY
regulator, this change keeps this regulator always ON but still tries
to keep the regulator in LPM mode.

Change-Id: I957d380fad9542059df3ec7e0a03357b93368cde