ARM: dts: msm: Replace stub regulators with RPM-controlled regulators

Update the mdmcalifornium-regulator.dtsi file to use the actual
regulators defined in the msm-pmdcalifornium-rpm-regulator.dtsi
file in place of the stub regulators.

Change-Id: I569bebbc63cfc34c3f9f7d0a049080050dc8669e
Signed-off-by: Devesh Jhunjhunwala <deveshj@codeaurora.org>