mfd: axp20x: Add AXP22x regulator information to DT bindings

Add the list of regulators for AXP22x to the DT bindings.
This includes the names and supply names.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
1 file changed