ARM: dts: msm: Use new railway resources for pmdcalifornium

This reverts commit 06559ebf
("Revert "ARM: dts: msm: Use new railway resources for pmdcalifornium
regulators""). The new RWCX/RWMX resources are now supported
by RPM.

Change-Id: Id959b5b64804251cc7ccb275b661e3cbde4b1c66
Signed-off-by: Devesh Jhunjhunwala <deveshj@codeaurora.org>