mfd: axp20x: Update DT bindings with AXP22x compatibles
mfd: axp20x: Update DT bindings with AXP22x compatibles

Add AXP221 to the list of supported devices.

Also replace any mention of AXP20x in the document with a
generic "PMIC".

Signed-off-by: Chen-Yu Tsai <11e8bbde1bc9e0af703df23be02afe58864a4a18@csie.org>
Signed-off-by: Lee Jones <630e34333487a351a857f6b705e04d30b37c1629@linaro.org>

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