dt-bindings: power: supply: drop quotes when not needed

Id and schema fields do not need quotes.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220726115748.101015-3-krzysztof.kozlowski@linaro.org

dt-bindings: power: supply: axp20x-battery: Add AXP209 compatible

The AXP209 compatible was used in Device Trees and the driver, but it
was never documented.

Cc: Chen-Yu Tsai <wens@csie.org>
Cc: linux-pm@vger.kernel.org
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

dt-bindings: power: supply: axp20x: Add AXP803 compatible

The AXP803 compatible was introduced recently with a fallback to the
AXP813, but it was never documented.

Cc: Chen-Yu Tsai <wens@csie.org>
Cc: linux-pm@vger.kernel.org
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

dt-bindings: power: supply: axp20x: Convert to DT schema format

Convert the binding to DT schema format.

Cc: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Rob Herring <robh@kernel.org>