arm64: dts: msm8998: Add UFS phy reset

Fixup MSM8998 UFS DT nodes now that Evan's reset series has landed.
https://lore.kernel.org/lkml/20190321171800.104681-1-evgreen@chromium.org/



Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: Andy Gross <agross@kernel.org>