ARM: dts: msm: add PMXPRAIRIE PMIC power-on device for KONA

Add SPMI slave nodes for PMXPRAIRIE PMIC along with a power-on
device.  This device can be used to reset the attached modem
chip.

Change-Id: I8cacb29ed75fc72a7216cad667d1460bd603e8d0
Signed-off-by: David Collins <collinsd@codeaurora.org>