regulator: add fixes with MT6323 dt-bindings shouldn't reference driver

DT bindings shouldn't reference drivers and they should be OS-agnostic.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

regulator: Add document for MT6323 regulator

Signed-off-by: John Crispin <john@phrozen.org>
Cc: devicetree@vger.kernel.org
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>