ARM: dts: add DTSI for AXP223

The AXP223 shares most of its logic with the AXP221 but it has some
differences for the VBUS driver.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>