ARM: dts: msm: Fix incorrect regulator label references

With overlay support observing regulator labels references
from previous definations in "holi-regulators-pm6350.dtsi"
are not getting overridden from "holi-regulator-pm6125.dtsi"
causing disable clients to refer to disable nodes. Fix this
by using alternative label name for clients using this
regulators.

While at it disable both device and resource node for
holi-pm6125 regulators. Also only disable nodes which are
present on holi and not present for holi-pm6125.

Change-Id: Ibfd931e91eee9380fb14026a2569ef592c96a9c6