regulator: axp20x: Prepare support for multiple AXP chip families
regulator: axp20x: Prepare support for multiple AXP chip families

Rework the AXP20X_ macros and probe function to support the several chip
families, so that each family can define it's own set of regulators.

Signed-off-by: Boris BREZILLON <4e91513d4f418754031d3d36b3fc73980c40a38c@free-electrons.com>
[11e8bbde1bc9e0af703df23be02afe58864a4a18@csie.org: Support different DC-DC work frequency ranges]
Signed-off-by: Chen-Yu Tsai <11e8bbde1bc9e0af703df23be02afe58864a4a18@csie.org>
Reviewed-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@kernel.org>
Signed-off-by: Lee Jones <630e34333487a351a857f6b705e04d30b37c1629@linaro.org>

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