dt-bindings: media: remove nokia,n900-ir as pwm-ir-tx is compatible

The generic pwm-ir-tx driver works for the Nokia n900, so nokia,n900-ir
can be removed.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

dt-bindings: leds: irled: pwm-ir-tx: convert to DT schema

Convert the PWM IR LED bindings to DT schema.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221204104323.117974-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>