ARM: dts: msm: Update SPM sequence and PMIC Data for MSM8994

Update SPM sequence based on hardware validation.
Also use pmic data 0, 1 for voltage requests from the SPM. PMIC Data 3 is
used for saving the current voltage and restoring when necessary. Replace
the use of pmic data 2, 3 with pmic data 0, 1.

Change-Id: Ie8fbd3b69b572d4e22ccff69fbc00810541f8711
Signed-off-by: Karthik Parsha <kparsha@codeaurora.org>