ARM: dts: sun4i: Add AXP209 PMU regulators for pcDuino1/2
ARM: dts: sun4i: Add AXP209 PMU regulators for pcDuino1/2

This allows voltage-scaling with cpufreq-dt. The reliability of
voltage-scaling has been checked by reducing the voltage of all
operating points by 0.025V (for extra safety headroom) and running
libjpeg-turbo decoding tests on 5 pcDuino2 boards. It means that
the standard sun4i voltages should be perfectly fine too.

Signed-off-by: Siarhei Siamashka <7555503cb5aac63adfd3a7d90e098b88fda217d4@gmail.com>
Signed-off-by: Maxime Ripard <2d324f4ca95610bde432fa2af2f28cd21110687d@free-electrons.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs